Questions About and Ideas for my '68 Chevy

[yfz450_0569]

i just bought myself a '68 chevy a few weeks back and i'm gonna start tearing it down this week. how hard would it be to build the whole frame as in how to put all the mounts on it? i measured the frame off a little and it will only have about 2 inches of travel with the lowering and wheels that i want even with a c-notch. the tire size for the back is 305-40-22 and the front is 255-35-20. i was hoping to even drop the truck to the ground with airbags but if that won't really be possible then i'll go with just airbags for a smooth ride or go with springs. this is my first project but i do have some experience with welding and a little bit of other metal work. any advice/tips on how to do the whole thing would be greatly appreciated! thanks