I did this, and I went 1/1:
Meds: I think just 2-3 of the cheaper kind of potions, a regen drink, and an Icarus wing.
Gear: Hell, I think I just used AF with Feral Fangs. I think I also may have borrowed some Elusive Earrings.
Food: Carbonara
I boosted about 2 or 3 times, used my regen drink and Dodge, then Chi Blasted. I DID NOT Hundred Fists at the start, nor did I WS right at the start. I simply just meleed him down, using my potions to keep my HP fairly high. I think I held my TP as well, but I'm not sure (this was 7 or so years ago). Basically the point is to delay his 2 hr- spike damage tends to cause him to use his, and if he uses his from the start you're more likely to lose unless you get lucky.
As soon as he 2 houred, I used my WS->Icarus wing->WS, then used my own 2 hr (this might have been in reverse order). You should be able to kill him before he kills you.
Given how cheap Vile elixirs are nowadays, I would actually go ahead and get one of those instead of, or in addition to, the crappy potions I used when I did it.
Ragnarok.Kiine said:
Remember, if you are intent upon boosting for chi, you must have your Temple Gloves equipped during and at firing point in order to maximize your damage.
You do need them when you boost, but not when you fire. That said, I would not recommend using a strong Chi Blast at the start because that tends to provoke him.