I wouldn't try it any other way. But as for your computer statement you will have to get that a new chip burned everytime you make your motor "breathe" better. As for your cam choice... I would do more research alphabet cams are from the dinosaur age. I would maybe look into an Xtreme Energy camshaft from comp-cams. I personally like the camshafts, I used the Xe282hr in a 347 build, it sounded lumpy and performed like crazy with a 1.72 rocker I had .608'' Lift on the exhaust side which is quite a bit for a hydraulic roller setup. Yeah I suggest looking for a differen't camshaft. Replacing a cam could easily run you over $1000 once you pay for springs, retainers, keepers, seals, rockers, rods, camshaft, bearings, possibly shims for the valvesprings or shims for the rocker arms. Doing cam bearings is also almost impossible without pulling off your oilpan. 95% of people will drop the bearings into the oilpan attempting this. Therefor once you have the pan off you could easily freshen the main and conrod bearings that wont cost you too much more money.
Yes you could use an aftermarket cam on your stock intake/heads. No you will have to get a chip burned regardless to run right.
From experiance I suggest buying another 302 motor or a 351W from a scrap yard or buy an aftermarket block and just do a whole build. That way you dont have to settle for anything ``less`` and you will be completly satisfied with the end result. No matter how long it takes you to put it together you will always have your car on the road which makes it easy to be patient.
