I'd do it again because it was quite the learning experience. I've been driving the car on a daily basis since the swap (november-december) and it's a blast to drive.
If you can source inexpensive parts, I say go for it. It's a great way to learn your car. My setup:
* Phase I EJ25 shortblock
* NA EJ22 heads with Delta cams
* Exedy lightened flywheel
* WRX front brakes, legacy turbo rear disk conversion, SS lines
* KYB AGX/Eibach/Group N strut/spring/mount combo
* WRX rear sway
The car is a fun and easy to drive fast. Best of all, we were able to build the whole thing for under $5000, including the price of the car. Once you get tired of the NA build, you can pull the motor and sell it. Use the $$ to start your turbo build.