New torque converter?? (and cam question)

I am looking to swap the stock torque converter for a new one in my 360. It all started when a few of the flex plate legs snapped apart, so now the transmission is coming out :cheers:

Right now the camshaft is a CompCam 268H, the car weighs 3350-3400lbs, has a 3.23 gear, and I drive it almost daily. The car will be used at the strip frequently on the weekends once it gets updated.

I am highly considering getting the TCI Breakaway converter (stall speed 2200-2400) and was wondering if anyone has opinions on this. I will soon be switching camshafts so I am also planning for the future.

Right now I am looking to swap for something similar to a CompCam PP280H or XE274H. So I am hoping the Breakaway could match well. If you need any other info I'd be glad to give it.

And for the cam question... Whats the maximum lift I could run on the stock rocker arms? I am planning on switching rockers when I change the cam... But if something came up where I had an opportunity to swap the cam without money for rockers, whats the biggest I could go? I heard from someone it was in the .470 range, but I need more opinions than one.

Thanks