My current starting strategy on my new world is completely IC2 based. I got a generator/macerator going until I got my BatBox running. I turned my generator into 2 water mills and set up some tin cabling. I manually feed buckets of water into each to generate more power, and passively get some while mining. After I got a fair amount of resources, I started making solar panels until I had one LV array.
I always build into mountains and make 7x7 (inside measurements) rooms in a grid pattern, each with my most used crops. I got wheat, carrots, potatoes, and now flax. Currently working on a cheap sorting system. Probably will have to mix and match Buildcraft and RP2.
Direwolf20 pack, btw.
Edit: Also will need to get some bees running, mostly for fuel. Buildcraft is also a must, along with Thermal Expansion; some ores don't work in the macerator....