I guess I never looked at the specs for the E700. I put 1585mm main on mine and while there’s room I still timed the tail rotor accordingly to prevent interference.
It says weight without batteries is 3417. I think 6S 5000’s weigh about 770 grams each? Which should put the weight at about 4960. It will be interesting to see what the flight time is. 700-class rotor at that loading should chew thru about a kilowatt of power in hover. Two of those batteries is 222 watt-hours. So I would predict about 13 minutes of hover time if you choose a suitable low headspeed around 1,300-1,400 rpm.