low buck 440 build questions.

I think I'm going to keep the 73 bottom end, probably not even put rings in it. Going to throw the heads on, mill them a little more. Howards said they would grind me up a cam
specs are 230 at .050 int 238 exh 107lc 103Ic lift is .531 .547 said it should make a ton of low and mid range torque with a fair top end 2000-5800 rpm
pretty sure im going to keep the 3.55s in it for now. I got a quote back on a converter they recommended a 9.5in tight converter since I want to drive it on the street. Said it should stall between 3000 and 3300 depending on the torque I'm actually making. And its slightly cheaper than the one I listed above.
If this can't meet my goals, I do have a small 100 shot of nitrous I can use.