Im sorry but it wont cost you 6k! I know i can put that build toghter for under 4K maybe 5k tops!! and that getting everything you listed. Just shop around before you buy something, dont jump on it quick and do alot of research!

If your wanting to keep AC and power sterring i would get a Inline pro manifold, with that manifold and a 3inch Dp i kept Ac for a long time. I also made well over 500Hp on it.
Axles i would keep stock ones, unless you plan to race alot. It has been proven stock axles will hold the power and run 9 sec no problems! If you race just pre load the car. i would go with a stage 6 clutch system from ACT with HD flywheel,
For the power that you are wanting i wouldnt waste my money getting a blocked sleeved, they ahve been proven to handle well over 600hp. It all depends on how good your car is tuned if you ever slow it up.

As far as tuners hands down Ed at balanced. he is the master tuner in GA. If you ask anyone off IA about tuners they will all say ED, he just knows his stuff.
I would build the head some or go with a vtec head if you can. Your power band will be much better and you will enjoy the car more with vtec!!