Is the Neu 1515/1.5y enough for a 13lb. LST2 on 4S?

I'm running a XLT1 from Fine Design now on a MM, but wanna take the leap to a Neu motor. I only bash so is 4S ok for now. I don't mind going to 5S or 6S but I'll have to get a new ESC too. Preferably 6S, so an MGM but Mike is always out of those too. Any suggestions?

I noticed Mike has them in stock again so I wanna get a couple before they go again.