Great game so far! I strongly support it! Also I would recommend the name GoldenSun and if you make a Silver remake (which would be great :P) SilverMoon. These names has been used in another two hacks (dead anyway, and the one was mine so I would let you use the name if you want). The names are not random though, in the Japanese Johto Opening of the Anime the words GoldenSun and SilverMoon are on I think it would be just great if you used them!
Anyway I have some questions and suggestions. To begin with, will be the day/night fuction on? (Seeing that you're hacking on FireRed I see that this will be difficult). Also since FireRed and LeafGreen are not supporting berry trees how is that gonna be made? Also, are you going to make also a remake of Silver? :P That would be really interesting. And also a suggestion. You say that you're going to put only Kanto and Johto Pokemon. I support this since as a remake of Gold, just like FireRed and LeafGreen where you mainly find Kanto Pokemon and some Johto in the islands. Is there any way to make a new Pokedex numbering? I mean to remake the Johto Pokedex. I actually prefer the national one, but I think as Gold remake it would be really nice to be realistic.
Sorry that I only criticise so far xD Really sorry xD Actually I should be doing that, this game looks like one of the best in the whole hacks history. :)