Yes, lets!
DIR/UTD/Hog being what it is, I've come across multiple opinions / statements:
1) Rec style is fine for rec diving
2) Dive the same for Tec and Rec - 7' hose
3) 5' hose is fine for Rec / Openwater use
4) 5' hose is better for Rec because if you don't have a canister it'll be hard to stow the extra 2'.
My gear ( DRIS 28lb BP/W and Hog single tank D1/D2 kit with 26" hose and black 1.5" SPG and 7' hose ) arrives next week so it kinda is what it is but I wouldn't mind talking it out.
You did the right thing, and there's always various opinions about it.
Firstly, I haven't seen a PADI AOW book in many years, but a Hogarthian style long hose primary used to be pictured on page 8 of it, circa 2001 or so. The concept of a Hog long hose primary may be unusual to many, but that's the fault of your instructor if it was covered in the AOW manual. It should have been covered in class if it was covered in your AOW class manuals.
Secondly, ALL diving is "decompression" diving... That is, the same basic rules apply whether you're a sport diver, "rec" diver, "tech" diver, commercial diver, scientific diver, military diver, or whatever. Yes, the agencies have to classify "levels" of diving so that they can progressively sell more classes, and so they tend to do it by calling some of it "rec" and some of it "tech." But it's a misnomer. Diving gets progressively more technical the more you do it - that is, some dives are more advanced than others - but there is no real division of "rec" and "tech," and you'll do better and progress faster if you wipe the concept from your brain. PADI classifies "tech" diving as, "Diving outside the limits of recreational diving," but to those who dive to 250' and do staged decompression, unless it's a job requirement, it's still "recreational." In other words, it's "fun," and that's the only reason they do it, regardless of depth, gear choices, gasses used, or complexity of the dive. In fact, to a commercial diver, any dive that's not a paying job is "recreational." To a military diver, any job that isn't a training or "live" is "recreational."
Conversely, I have seen many divers diving doubles or rebreathers or FFMs or drysuits or doing staged diving or even diving backplates, wings or "tech" BCs WITHIN "recreational limits," so the line for "rec" and "tech" is equally blurry from both sides. Avoid using the concept so that you will not see a barrier to your next advancement in dive skills and "level" of diving. Dividing some diving as "rec" and some as "tech" only serves as a barrier - a fence, so to speak - that you will have to hurdle in thought, skill, planning, preparation, emergency response, gear choice, and gear configuration when/if you get there.
Regarding the need to consider some dives as more complex than others, if the truth were to be told, there would not be the dual classification of only "rec" and "tech" - there would be many classifications. It wouldn't be fair to call a "level 1" dive "rec" and "level 2" through "level 99" as "tech."
...So the concept of "rec" and "tech" serves no purpose but to restrict diver learning, is equally blurry regardless of which side you look at it from, and is nondescriptive regarding how advanced a person must be or whether or not they have the right skill set to handle that "level" of diving. The same nondescript issue holds true for the term "nitrox" - don't even get me started on it.
Nitrox means "nitrogen and oxygen," just as "trimix" means "a mix of three" and "heliox" means "heliumm and oxygen." AIR is nitrox. So is 32%, 36%, 50%, or even 99%. Breathing gasses should never be called something random, as the wrong mix at the wrong depth can kill you as dead as putting a gun in your mouth and pulling the trigger. It should be called by it's maximum operating depth, or "MOD." 32% is "MOD 120." 36% is "MOD 100." Air is "MOD 210." Yes, at 100 or 120 or 210 feet those might not be the ideal mixes to be breathing, and they might obligate you for decompression or narc you horribly or whatever, but the depth at which you die should be what the gas is called. Simple. Yech. 
Anyway, making the choice that you have - to use a backplate and wing with a 7' long hose primary second stage is a wonderful way to flatten that made-up division between "rec" and "tech"... Learn to dive all of your dives with this setup, and moving to doubles or stages or rebreathers or whatever you are told is "tech" will be second nature and will not require you to learn new skills in new gear.
...So yes, you have done the right thing - that is, chosen a gear configuration which will serve you in ALL "types" of diving.
The 7' primary is easily tucked into the waist belt part of the harness. Alternatively, I have seen people hook it under their can light battery, their knife, or a pocket (Halcyon makes a wonderful "hard pocket" that threads onto the waist part of the harness for this purpose, and it works well.
Yes, the 5' hose is an alternative if you are diving a single tank. It threads under the right arm and does not require any tucking and yet still allows the same OOG response as a 7' primary. However, using a 5' hose immediately limits you to diving non-overhead environments like caves, wrecks, and decompression obligations.
The 7' hose has no such limitation.
Do you know the basis behind using a 7' hose? Do you know why not 8' or 9' or 6'? Do you want to know, if you don't already?
