I personally went with the 12-300-4, which is 285hp and 420lbft, because I wanted even more grunt in the bottom. Performance above 3000-3500 rpm isn't a prime consideration for me in a street machine.
Here is the dyno simulator run for the 12-235-2. The left side gives you all the parameters for the stock 350 you need to set. Then you can try all the cams you want.
