Joe,
Some thoughts on your engine:
1. I would go to a roller cam for power and vacuum signal. A roller also negates the need for a 20 minute 2,000 rpm cam break in right off the bat. New engines make a ton of heat during this 20 minute break in. I would speak to COMP Cams and get a recommendation.
2. I put an aluminum radiator electric fan combo in mine. This required the Ron Morris mounts to set the engine back a bit. So driveline length will need to be addressed.
3. Boy do I like Stan Johnson (Ford Powertrain Applications) headers tuck up nice and tight. Have them on both my cars.
4. Lentech is the S--T. You will love it. This requires some shifter mods. Not sure if you saw the thread I did on a mod to a stock shifter to prevent accidental shifting into neutral.
5. I put Lokar Cables for both Throttle and Throttle Valve cable on my car. One downside of this is a fairly heavy feel on the pedal. The quality of their bracket is second to none. Check it out below. The Firebird has one on it as it has a Lokar pedal and a 700R4. Comes in natural or black. It does add 1/4 inch to the carb height. What hood are you going to use. The Boss 429 scoop looks bad ass and it allows for a massive hole if needed! The dual spring return ensures no stuck throttles..... Boy am I an ass!!!
http://www.lokar.com/product-pgs/new-products/newproduct-pgs/4150series-for-street.html
6. Is the short block assembled? Are the heads on?
Some other thoughts/questions:
1. I assume the window tracks and regulators are out of the car?
2. Are any brakes functioning?
Now the real question for you. I love projects like this a bit earlier in the fall winter time frame. After Memorial Day and until Labor Day I call "lake time". This means a lot of time away from the shop.
So if I take it now it may take longer. I work about 4 to 5 hours a day seven days a week. This way I stay fresh and do not hurry any items to completion. The Firebird has been in may garage since mid November.
I only charge for hours spent working on the car. I keep a simple paper log of what I did and the hours spent each day. The Firebird was missing a lot of parts and GM is a bit "furrin" (foreign) to me. I can look at a pile of Mustang parts and tell you what is missing. Not so on the turd bird.
I keep all receipts and you may get tired of me calling or e-mailing for thoughts. I keep in constant contact when working on your car.
Rob