my 360 build

The cam you have will have a choppy idle, but not crazy. Put more duration in and it will become less manageable to drive. The engine in it's current form is more than capable of about a 11.50 time slip if the car hooks.

You'll be grinding the pushrod holes in ede heads to run a roller so either you do it on the engine or remove them and do it. There are lifters available that drop in. New pushrods would be a requirement too. Depending on the roller, new springs as well.

If you buy a converter, buy a good one. This is where most everyone fails when trying to build a good running car. Spend 6K on an engine and put a $200 shelf converter behind it. Sometimes they work well, other times, actually most of the time they are marginal at best. Call a good converter company, A1, ATI, T/A, Dymanic and tell them what you have. I'd get something like a 9.5" that is tight when driving but flashes hard to about 4K+ range.