I'll just warn you it will be largely useless. It's like buying protection and forcefield. They only stack to your power level, and technically, despite your enhanced powers, you are still PL9.
You'd be better of investing in amazing save reflex, dodge and evasion. That way, if you find yourself without your force field, you get your reflex save instead of your damage save (except for things like aoe), plus you get a better reflex save in case of AoE, even when you have your force field.
Leadership can be really really cool, but if I'm not mistaken, people have to do what you want them to (generally speaking of course) in order to get the benefit.
Lemme know your final decision, and no, you can't call a friend (great comic Aggy).