1) Most likely not, if it's your 1st time. 2) OEM3) Bearings + synchros, at least.4) +$1000
...
If I were you, I'd find another with lower miles to use.
http://www.car-part.com
The trans are cheap and plentiful...no need to rebuild, especially with what it costs. You could buy a 50,000 miles trans for $250...and kill it in a year, then buy another...and still be $500 to the plus, as compared to one rebuilt one.
Try the one you got, it may be smooth and work great for years to come.
Or take the sure bet, and find a low-mile trans from the junyard...with a warranty.
- Brian