Should work good, the F4B isn't really up to snuff with the newer intakes like the Stealth and RPM, but it's a vast improvement over the stock intake! And yeah, the 650dp won't get the best mileage, and you'll need good control of your right foot to keep out of the secondaries until you're up at least 3000rpm... otherwise it'll most likely bog if you floor it below 3000.
Unless you have some gear and are running a stick, I would go w/ a vacuum secondary carb. I am running an 825 Mighty Demon DP with 3.73 gears and a blower with a loose converter and a pretty healthy cam so it works very well. On a mild 302, you might just be sucking more gas and have bogging problems.