H22a swap in 01 Civic

i have two things to ask...
should i go JDM or USDM with the engine swap? Ive heard JDM can be a lil more difficult cause of wiring. Is this right?

other thing
I thing im going to buy a h22a 92-95 complete changeover it comes with :
- Motor
- Hydrolic Tranny
- ECU (P13)
- Axles with Half Shaft
- Shifter Cables
- Shifter Assembly
- Stock Motor Mounts
- Alternator
- Starter
- Clutch
- Flywheel
- Intake Manifold
- Exhaust Manifold
- Fuel Rail
- Injectors
- Distributor
- Engine Harness
- Comes With All Sensors Needed
- LSD Tranny (Optional +$300

should i go with that tranny for the extra 300 and will there be anything else i will need to swap ?

also what about aircondition i kno this is stupid but its hot where i am