Bob, You'll need to add the prop info to get any kind of response. No way to know your amp draw on the set up with out that.

Might also look at any of the calc programs out there for help too. You can plug in your specs for motors/props/esc/ packs, and play around and get a general idea of your flight times.

MotoCalc has a free 30 day trial, and there are quite a few others out there too.

p.s. if need be PM me your specs on everything and I'll be more then happy to run it on my calc programs for you.