Help me understand computer options

I definitely don't plan to keep this thing stock... for long. Can a factory PCM w/ the diablosport tuner handle any power adders? This is why I started this thread... none of this stuff makes any sense to me.
I'm not sure what the limits are on the other tuners but I know that the Holley Dominator will allow you to do absolutely anything so I just went with it for the possibilities.
I think you have more options because you are running a standard which means you don't have to control the transmission. With some ECMs, you have to you a cable style throttle body. I would look at each ECM available and see what you have to make them work. They might cost you more than you think by the time you add this and that.
Somebody should really do a spreadsheet for all the ECMs and show what you have to have for each one and what each one is capable of!
I did alot of research before I decided to go with the Holley but I've pretty well forgot what they all do now....
Sorry, I'm not much help in this department.