Congratulations with your certification. Also, it is nice to hear that you want to proceed with your education. By reading your story it reminds my story as well. I am a bit more advanced in diving education. So, I wanted to tell you my way of thinking regarding diving education.
I got certified last December. I was lucky that I had a very thorough instructor who spend with me and my wife almost 5 days before we got PADI OW certifications. However, this is only a beginning of journey and definitely you need to train more. From my experience I can tell you that PADI AOW certification is a bit of joke..... you just do 5 different dives with bunch of other people and you get this certification. I saw a bit more value in specialty certifications.
1) Nitrox - this is a must specialty because without it you will not get Nitrox fills. Also, theory for basic nitrox is rather easy to understand.
2) PADI Deep - it opens you depth up to 40 meters. Also, some liveaboards require this certification as some dives are going to be deeper than 30 m. So, my advice to you. Get Deep and Nitrox certifications.
3) Wreck - you mentioned that you like wrecks. For me it was a bit different.... I prefer coral fishes instead of wrecks
However, wreck specialty was quite interesting as I got opportunity to try new and learn new skills (especially related to wreck penetration.
4) Night diving - no need for this specialty, however, definitely it is worth diving at night as you can see completely different view, fishes and creatures that are hiding during day time. I have got this certification as I like collecting cards
5) Underwater naturalist - no need for this specialty, however, I really liked theory and to find out about classification of fauna and flora.
After one month I will be taking Rescue diver course and I would like to get some skills how to rescue myself or assist my buddy in case of emergency. Also, will be taking Drift and Sear & Recovery courses as I curriculum is quite interesting to me. If I have time I will take Oxygen provider course as this would be like a supplement to my Rescue diver class.
After these classes I will get PADI Master Scuba Diver certification (however, the name is of such cert. is a bit misleading..... person with 50 dives and few training courses is definitely not a MASTER Diver
)
After that I intend enrollment into TDI courses like: Sidemount, Intro to Tech (this is a bit similar to Gue Fundies... but not the same course), Advanced Nitrox + Deco, Cavern). After these courses I will have some light introduction to technical diving. I guess I skip further technical diving training (maybe will de trimix and extended range courses in the future) as full cave or advanced trimix courses seems way above my internal risk perception limits.
Regarding GUE Fundies there are 2 general opinions: 1) You should start them as soon as possible as you will learn broper propulsion, buoyancy and trim from the beginning... it is easier for instructor to teach you from beginning as you do not have any bad diving habits yet 2) You should have maybe few hundred dives under your belt and then to take Fundies... than you will be able to easily master appropriate skills. I do not know which route is better as I have not taken Fundies course yet.
I hope that my story will be useful to you and you will get some ideas how to proceed with your own diving education.