What kind of vehicle do you have? I've done a few motor swaps on vw vanagons, everything from a simple 4 cylinder to a race motor conversion. It can be done cheaply with a little creativity, you don't necessarily need a lift, you can make one or drop the engine to the ground. Get yourself a shop manual and just follow instructions. This is also the perfect time to tidy up the new motor with some new hoses, seals and such, this can be pretty cheap. Any hoses with cracks should be replaced, fuel injector seals should be checked, oil seals... You need a torque wrench because certain bolts should be torqued to certain specs, which will be outlined in the manual