Shadow- TEKIN's spec's are very realistic, so you would be pushing it a bit with what you have in mind. Warranty may be an issue if you are buying new and wanting to run that kind of setup.
I know 5cell is less work for the ESC, it is one of those border line things though, I couldnt promise how effective it will hook up.
Let someone else comment, I would hate to see the ESC not meet your requirements...
I know we all dont like waiting at the best of times, but I would say the RS is the only true answer to your question here.