I'd hold off on optics until you got a feel for the gun, I've recycled money through a couple now and I'm still not 100% convinced on my setup so my advice is run iron sights for a bit.
For charger I recommend the IMAX B6AC, will charge anything you need. I don't recommend an 11.1v lipo right out of the box on a lower-end gun as you'll put too much stress on the internals, 11.1v is good on higher-end setups that can take the additional abuse. 7.4v lipo should be fine.
As for the gun specifics can't give advice there...