I went full spr pure arcanist (PRM +Devastation) long back maybe around B31, got tired mid elite. Low cd mirror + Aldnar cdr proc help in tough situations
Overload, Conversion, Fabric of Reality, Disintegration, and Absolute Zero all scale like complete trash - you’d be better off* pumping raw points into any mastery bar than leveling these skills.
To a lesser extent Arcane Will and even Mavien’s sphere also don’t scale that well. As for Flash Freeze vs Curse of Fraility the slow on CoF won’t render the ability to freeze and entire screen useless, similarly the ability to slow a boss will really come in handy when you find freeze doesn’t work on em (and even if you take absolute zero if you can’t land the freeze you don’t get the slow, also the absolute zero slow is resistible)
*with a few ranks of + all arcanist skills (or +skills to the skill in question) they are still worth a single point however, but never more.
And survivability? You will be torn limb from limb by grobbles with that little health.
Overload is going to do next to nothing for you. If you’re running max AAR, you’ll need max IEE (just the first node) to help support that energy cost. Overload is pretty much wasted on a AAR build. IF you have the offensive ability, Elemental Exchange is going to be far superior to overload as the crit damage is nice! But if you don’t even enough OA to crit, then it won’t do much…
Melvin’s sphere is MUCH better then its modifier (conversion). Max that well before you max conversion.
Going pure Arcanist leaves you with low HP. I’m assuming your devotion plan is to go heavy on the defensive side…
Also, grab one point in callidor’s tempest and its transmuter, wrath of agrivix. The knock down will help when you get swarmed…