75gmck25 has some good advice.
Here's what I would do.
CompCams 260H, # 31-216-2
212* single pattern
should work with stock springs and heads
slight idle sound
Shorties are fine. Long tubes will hurt your ground clearance but give an increase at low/mid rpms.
H pipe is fine and simpler to install.
Any header is better than the factory logs.
Hedman makes a good inexpensive 1 1/2 inch 4 tube. Make the collector 24 inches long for more torque.
Resist the temptation to over cam it.