Spend money on suspension. You do not need a fast car to deliver pizza's, cause they have those bags that keep the pizzas warm you know.

Suspension = money well invested.
By the time you build your motor, you will have regrets, or crash your car and try to sell your parts for 50% what you paid, and get depressed and kill yourself. If you get coilovers you cannot go wrong.

Get your shit running right. And then boost stock block with good tune someday in the future. You need wheels and brakes, and suspension to support power mods.