1 LK is fine. If it's a rocket build I would ditch Fast Shot and take Bonehead, though. Fast Shot won't affect the AP cost for the Launcher, but Bonehead will be useful against snipers.
I also think that 8 EN is plenty with 3 Lifegivers. You'll end up with 258 HP at level 24, and it frees up two SPECIAL points that you can throw into Intelligence (giving you 7IN after Bonehead). Of course, more HP wouldn't hurt.
But the build you posted will be fine in RT. 11 AP with BROF will work just fine if you put a launcher in each hand.