What's your ultimate goal for the car? Strip only, or a street car? If it's gonna be a street car, you can save yourself a bunch of money and not tub it. IMO, you shouldn't back-half it unless you have a gazillion hp and will only use the car as a serious track-only competition vehicle. Look at some of the Fastest Street Car/ Cheap Street competitors and stuff; they do it on a 10" tire and are in the 9's and 10's.
What compression ratio will that piston/head combo give you? That, along with what your primary use of the car will be, will determine your cam choice. Everything else looks peachy, but if it's gonna be a street car, go for a Richmond 6-speed and bang your own gears.
JMO, of course!