Hi everyone, I'm shooting my first baptism in a low light/no flash church (little ambient light). I've never done this before and would love a few recommendations to ensure this is a successful shoot. I have a canon 5d mii, 50d as backup, with a canon 24-70 and canon 70-200 f/2.4, a canon 50mm, a tripod. Should I invest in a monopod? I'd also like to upgrade my tripod with a ballhead (bogen/manfrotto?). I would prefer not to raise my iso above 800/1600. What is your experience with ISO and managing low light situations? Any tips and suggestions would be greatly appreciated. This shoot would be at 3pm on Sunday in New York.