I have alot of pieces lying around that would be very useful for you to swap over if you decide on the Scoupe swap. I have a ton of leftover bits from a 93 Elantra we parted at one of our site meets. I think the Scoupe would be a quicker swap from a mechanical point of view, but you have to have the manual for the wiring colors. I believe evotistical may have posted those up, but if not, check out the FSM's we have archived here:
www.lilevo.com/mirage/ If you have a Scoupe VIN and we don't have a Scoupe manual I can get access to download the online PDF, or you could given the proper linking.
Swapping an automatic will be a pain due to having to swap out the entire pedal assembly, but otherwise the car is exactly the same minus firewall cuts for the slave/master clutch cylinder.
It's you preference due to being nearly identical setups minus the rear trailing arm suspensions, Scoupe is a trailing arm and spring wedge setup, and the Colt has a similar solid rear axle but uses struts in place of the sandwiched Springs. Both are easy to swap out if needed for height changes.