Swaps are not hard, if you have basic knowledge, tons of tools and a garage. The thing people have problems with swaps is that they think the engine they bought must be good . But if you want to do a swap, I would say get a front clip with all the JDM goodies, make sure you change all the seals and the clutch, check the turbos if they are good or not, o2 sensors, etc. You may as well upgrade some of the stuff like the radiator, intake, exhaust manifold, etc since you are on the job already. Do not get one part at a time because it means extra hard work and waste of time.

Just a little advise from my experience.