The 91.1 one is ideal as a defender, I have 3 Exeggutor's, none of which with that moveset which I consider ideal as a defender, of course my son has one Exeggutor, and it has that moveset. I'd continue to focus on that one, your new one will still wreck any water type it faces, put him on the back burner and power him up at a late date.
GamePress
Exeggutor moveset and powering up
Finally hatched more Exeggute yesterday to get a second Exeggutor.
First one 91,1% IV Confusion/Psychic, already powered up to 1877
New one 93.1% Confusion/Solar Beam at 1672.
Only got 6 candies and with grasses seemingly rare round here I'll probably be buddy walking/hoping for another hatch.
Ideally I want to use one as an attacker and one as a defender. Carry on powering up the 91.1% first and use him as a defender, hoping the other is strong enough as an attacker as is until I get a surplus of candies?
New