Hi! After searching far and wide these are the mods that I believe would go best in a modpack:
Orespwn
Morph
Rei or zans minimap
Galacticraft
buildcraft
Mystcraft
Enderchest mod
Archimedes ships
Hats
Tree capitator
Mutant mod
Furniture mod
tinkers construct
Biomes o plenty
Applied energistics
Millenaire
Optifine
There are probably some that I missed/won't work together but I think a lot of these would go good together. If somebody could make this for me I think it will be very popular. Thanks!