I just wanted to report back incase anyone now or future wanted to know how it went:
I did Low TI at lvl 92 vs barthories and high orcs. My equip was:
Evil Wing
Evil Wing Ear
Cd In Mouth
+4 Lord's clothes of Ares
+5 double kingbrd Erde
+4 Valkyrja's shield from hell
+4 immune nidhoggur's garb
+7 green boots
advanced ring of flame lord
advanced ring of resonance
some expensive equip at the end but mostly stuff that is considered mundane. My stats were as in the first post.
Using 2x parasites and a lvl 99 filir i was able to level quite effectively! I completed the TI (400 of each mob) and I died a couple of times, mostly to carelessness. I rarely attacked at all, my main job was casting Aid Potion on myself and my Filir. I did sometimes drop a Bomb to thin out the mob - VERY effective on barthory! but high orcs are fire element and immune to its dmg
The parasites attacking DID proc the flame lord rings AND the cd in mouth which made for some very good DPS at 95 int. HOWEVER there was one unexpected side effect: although any skill proc'ing casts instantly regardless of how recently the previous skill was used, it still applies cast delay to skills in your hotkey bar! SO what this means is whilst cd in mouth is going berserk and the flame lord set is triggering you can not use aid potion or bomb skill! That caught me off guard at first but when I got used to it I was able to manage it (and you can still use potions in the normal fashion of course)
I turned in the quest for job exp only (I figure I can AFK my base level but not my job!) and with the fighting I did in the dungeon + the turn in with a HE battle manual I had hanging around in kafra I got 1 base level and 5 (!!!) job levels taking me up to 93/53.
This seems a very viable way to level a biochemist! but it isnt cheap. I burned through hundreads of white potions (literally, hundreads - probably around 400-500) and tons of plant bottles - not to mention a few bombs. I could say plant bottles are free because i use stalker to hunt ingredients and make them myself, but it still takes time. white pots I buy from store so spent around 500k on that.
I am trying to make money with my other chars to pay for this - grey shard farming for thanatos gear to sell and mvp with ranger - at the very least i have some yggberries to sell XD
anyway, very good - recommend if you can afford the bottles! and thanks again MisterWrong (shouldnt it be MisterRight?) for pointing me in correct direction