Look at a 207 swap over spending money to build an early ej20 block. They're shitting out 300-350hp with the right parts and good tuning, especially if you don't mind a sprinkle of e85. You will have to budget for a driveline swap earlier than you think if you want to drive it with any kind of anger.
Blouch is 2-2.5k but worth the money imo. An engine build would run you in the area of 10k so not sure why that would be the sticking point. A 1.5xtr is a perfect mate to a 2L looking for 300hp+.
Aftermarket
ecu another consideration needed.
You could also spend 99% less money and have a nicely sorted decently quick car around the 250-260hp mark.