No way I wouldnt spend that much money for a headswap when a blower will make waay more power than PI heads.
The headswap will cost you as much as it costs for a blower.
Just slap a nice vortech supercharger on it with a decent exhaust and be done with it. You almost have enough money for one right now. Look for a deal on one or just save up for a little while longer.
If you do the headswap your car will likely be out of your hands for a while. Depending upon if the shop you are working with will be able to install it there at the shop or not. You will have increased compression from a headswap and thats a not a desireable thing unless you plan on keeping it N/A forever. Worse gas mileage too. If you do a headswap you will probably want to put a PI intake, new intake elbow, throttle body, and CAI on it too. Your talking serious money here....
All that when you could just take one whole day to install the supercharger (you can do it) and youll be more than satisfied with the performance. The car will only use more gas while its under boost. Most kits come with a premade tune for your car. All you have to do is plug a new chip into your computer.
Seriously look into a supercharger. It may sound like a big deal but trust me that headswap will be alot more involved timewise and moneywise.