[Shocker91]

Oldman is correct if your future goal is to go forced inducted then focus on getting money set aside for it.
1.)the 103TB can be used with a supercharger of your choice whether it is PD or Centrifugal. the MSD will only work with a Centrifugal S/C or Turbo set up. the roto fab for the LT1 is not compatible with Centrifugal S/C's but can be modified for P/D superchargers like whipple, magnuson,etc, some turbo set ups retain it if you do rear mounted.
2.)for exhaust upgrades headers are pretty much common place with any build i prefer the 2'' pair over teh 1 7/8 as there really is no lose from them in low end torque and with forced induction it is beneficial.
3.)MPVI-II from HPtuners is an absolute must if you plan to do work yourself, paired with a AEM Wideband AFR gauge 0334 it allows yout to remote tune the vehicle and data log accurately.
4.)Fueling cannot be hit enough for forced induction builds. depending on the power level you are aiming for the LT4 Injectors, High pressure fuel pump and Lowside fuel pump with get you just under 1k whp before the injectors are reaching max duty cycle. i

if you need specifics on anything feel free to message i am happy to help out!