Zeeba, i have thought all of that out. I have one bombzone where the CT's can get there first and post, but only by a few seconds (1-3), the terrorists, if they go the fast way, have the higher ground, but if the CT's want to flank, they need to walk all the way around the map. - Advantage to terrorists for mid access, and Bombsite A assaulting.
HOWEVER
bombsite B is CT's spawn and is only accessed by 2 areas, but if the T's get lucky, and take mid all the way through, it might be unguarded if the CT's all rush A, or take the western path south (as seen in my layout, CT spawn is north, T's, south.)
I've thought about the layout for a while, and it seems to work. so i'm just praying it does.