302 Horsepower help

[Vinny5]

I am currently in the middle of my project, and wondering where I might be on horsepower, and maybe some cheap ideas for extra horsepower. I am going to college so money is really tight. Parts and what i paid are:

Stock crank$0
Stock connecting rods$0
Flat top pistons $0
1969 351w heads 60cc combustion chambers, heavier springs $50
Hydrolic roller cam similiar to B-303 grind, $50
Holley 600 double pumper carb rebuilt 1 month ago $120
Edelbrock Performer 289 intake manifold, $20
Full length headers,$0
mufflers 3" glasspacks $80
Distributor stock
Wires 9mm ford racing$40

I have been lucky with finding deals on my engine from friends either buying wrong parts (cam) and others just having stuff sitting around, my car is a 1982 Capri RS and I'd like to keep the 302 in there incase i ever restore it. I would really like to know about how much horsepower i might be making, and maybe some cheap ways to gain just a little bit extra, any help is always appreciated!
Thanks for your time
Vinny

[ARUSSELL]

You can get it from K & N or a knock off company, but it is the 14 inch air cleaner, as tall as you can fit under the hood but get the xtreme top(breathable filter on top). This allows direct airflow down the carb.