the pros use a cherry picker attached to a lifting frame to remove the bed. It's basically a "H" frame with the ends going under the bed lip. The cross bar of the H is where the cherry picker is attached. Lift slowly and adjust to find the center of gravity.

As far as the cab, A DIY method is to first raise the bed off the frame by installing wood spacers (like stacked 2x4s) and then insert long 2x4s crosswise and then nail those together to create a cab pallet. Once the pallet is built and supported, raise the cab and then the frame rolling chassis can be moved out.

Okay, so now the cab is up in the air and the frame is out the door... build a cab table (with wheels) so the cab can be lowered/moved on top of it - three friends, a case of beer, and two large pizzas.