Which Exeggutor to Max/TM?

My personal opinion: FTM the level 35 Exeggcutor, and Charged TM the level 31.5 2,531CP Exeggcutor. Either would be a decent candidate for leveling up.

I wouldn't touch the rest of them. They're too level (or not legacy) to be worth the heavy resource investment required.

TM the 93% one to Solar Beam.

BS/Psychic? Must TM go to the professor.

I have a full L40 2909CP ZH/SeB 98IV. No regrets. It’s actually not too bad as a sweeper and it gets auto selected occasionally and I just go with it (its stats show a ton of battles). Your E/SeB would be slightly better due to faster EPS and therefore more spamming of SeB.

So, I say go ahead and max that one. TM or don’t. Depends on how you feel, what you want to do with it, and how many TM you have. I have chosen to leave mine as created , as I have with all my 3000+ Vapors, everyone of which has AT (despite 25+ FTM and CTM each).

The C/P L31.5 is tempting. It’s already big enough to contribute to solo champ and gengar quite well though. (I’ve left mine at <30).