Okay, sorry about this JNathan, but I don't recommend HGSS graphics, just my opinion, I think it looks better in FRLG graphics.
First of all, theres a wider range of FRLG Grahics.
I think that if you use FRLG graphics, it gives you more of a RPG feel to it.
3rd, when I use FRLG graphics, I tend to make the map more detailed, I just think FRLG graphics are better. It also looks like you came a long way already, so I see no reason to switch.