Just curious of the chances of a 2 asian arowana community w/ other fish or a 3 with 2 asians and one SA. Would either of this possibly work or would i be screwed either way?
There is no magic number that will or will not work. All you can do is try the combo out. You just need to make sure you have another tank, so you can separate if needed, before you attempt the mix.
Like Simon said, flagtail has somehow done quite a few aro coms. It might be in your interest to PM him. Somehow hes gotten a trio of silvers to work without much problems. Also has a pair of greens that somehow worked out which, if i remember correctly, was bought by Simon. I don't know how he does it, but flag's got the magic tank.