@ctdigger Those motors plus those props aren't likely to work out, as suggested would get an account at ecalc.ch and plug all your numbers in there for actual components you'll buy to see what the actual flight time should be expected (roughly).
The motor kv is an approximation but it tells you how many RPM the motor does for each 1V you apply. So a 100kv motor with 1V goes 100RPM, same motor kv with 2V goes 200RPM. At some point the copper in the windings gets fully saturated with current/heat and can't take any more volts (really the ESCs pulse the voltage on and off very quickly in a "PWM" like duty cycle signal to deliver an average voltage by just sending the full voltage for some percentage of the time, say you have a 14V battery it will pulse 14V then 0V then 14V and if it is on 14V for 50% of the time it's like 7V is being applied, the applied voltage across a mostly fixed resistance coil in the motor creates a current proportional to the voltage applied... anyways deep in the weeds now
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Main point is any kv motor can work with any voltage battery really, the limit is how much current flows through the motor and for how long (more current for more time = more heat) if the motor can't dissipate the heat quickly enough the enamel coating on the wires will melt and the wires will short and get much hotter much faster (smoked motors).
Regarding 10" props, I'm using 13" props on a new hexacopter build and would strongly recommend not going with anything nearly this big for a first build. You should look at 3" or maybe 5" builds, 3" off the shelf are good learners since can crash a lot and they are hard to break (relatively speaking). A 5" is a pretty standard size to build DIY and can find 1000 guides on YouTube to follow step by step and don't have to deal with troubleshooting on your first go around. For my 13" props on a hexacopter I'm using 620kv so for the same volts applied my 620kv motors will only spin about 1/5th or 1/6th the speed the 3500kv motors can spin but mine have more torque so they can spin a bigger prop, small motors with no torque trying to spin a big prop really fast just isn't going to work (they won't actually be able to spin it up or maintain that speed with a big load on them like a big prop).
Long long long story short, use ecalc.ch get the license once you know kind of what the parts are (sounds like you're there) then start plugging in numbers on the left and hit calculate, share your results or let us know if you have issues filling in some/all of the boxes (mostly just need to fill in stuff on the left-most side, other parts are customization details).
