Just a heads up: If we're talking 1.9 mods here, that's virtually uncharted territory at this point.
Virtually none of the big 1.7.10 mods have a stable port yet due to differences in the engine between 1.7.10 and 1.8+. This includes Applied Energistics, IC2, Thermal Expansion, ComputerCraft, and multiple other mods. The only large mods I can think of off the top of my head with 1.9 ports are RFTools, Psi, the previously posted building mods, and progressive automation.
Not trying to be a downer, it's just that the 1.8+ modded scene is going to be different from the 1.7.10 scene by a long shot.