Very low budget 360

Ya, what he said, (moper) and Headman headers with 2-1/2 pipe exhaust. Carb of your choice since ethier will do, the Holley has parts on the shelf though I like the T-Q better.
I like the smaller cam idea for total streeablity and a broad early torque curve. There enuff cam there for the goal which will be met with ease.
Your build ideas look very good.