11" is a pretty small kayak. I would recommend something in the 13' range like this
one REI is also offering 15% off if purchased in a package deal. Not sure if that applies to the kayaks already on sale though, but should apply to accessories.
I used two part foam, that cost $29.00, and maybe added 2-3 pounds to my kayak. Not much weight, but it hopefully strengthened my peddle assembly, and created a barrier so my gear stays put. For me it was the ideal way, but it is a messy job and requires a project minded person. If my hull cracks, it is under warranty for 5 years. Pool noodles are the easiest and cheapest especially if you can get them for around $6.00 for 6 of them. The downfall with the inflatable deals is they take up a lot of room, but they definitely serve their purpose well.
The anchor chain will pretty much hold a kayak or boat in place and the anchor is hardly used, under normal conditions. The chain does help keep the rope from chaffing, but more importantly it keeps the anchor flat on the bottom so it can dig in. Without it the anchor will be pulled upwards and could drag. Scope (The amount of line let out in relation to the water depth) is one of the most important parts of anchoring and something that is often too short. You need a good amount out to keep the anchor flat on the bottom.
Anchoring Techniques.htm
For the
pump It seems to have a bad review there but is also one of the only pumps with a stainless shaft instead of plastic. I have never needed it and hope never to need it, but when tested it pumps well.
You can get a Thule rack system for around $220.00. I typically buy that stuff from ebay or REI when they have a 20% off coupon. I have three Thule racks with one being a T2 bike rack and have been happy with all of them. Yakima seems to be higher priced but either brand would work. I actually went wider than my car calls for with the bars so it will easily hold two kayaks. Gotta watch the head though!