Power from 1500 to 7000.....hmmm......
To quote a line from the movie "As Good As It Gets" --- "We all want that dear. It doesn't exist."
If you're gonna build a naturally aspirated 302 that has peak power in the 6 to 7 grand range -- it's likely that it's gonna be pretty soft in the idle to 2500 range -- which is primary street driving territory. That's especially true if it's efi. What most folks do that want 400 or so 'streetable' HP is go up in displacement, and come to grips with a 1500 to 5500 spread in power.
Now - 4 valves/cylinder, variable valve timing, variable runner length intakes -- you start to have pretty amazing flexibility. But of course that stuff isn't available for a pushrod 302.