67 Barracuda- Brakes and suspension on a 5000 budget- advice needed

Unless you have money just to piss away that laundry list of parts you have there most amature racers dont have in their track car.
All a great street car needs is a good set of tires, shocks and sway bars and its game over. Of course good brakes are always a blessing.
I would add that boxing the factory LCA's would improve the stock suspension and is inexpensive to do.