1964 Barracuda ... just startng

Hello everyone name is Sterling im new to the forum and i have a 64 cuda that is all stock. the plan is to pick up a 360 or a 318 and build to 400hp is the goal. the color to be plum crazy purple PPG, or black... idk yet on the color black get s very hot in Arizona... im open to what others think i should do to the car so please pm me or post in chat what you think and tips and help if you can will be very appreacaited sense this is my first rebuild/ hot rod :) cant wait.. P.S, anyone else located in the Arizona district?
IMO ppg is less common than black and may not get quite as hot lol