i have a lvl 127 fire tao, got him from 110 to 127 botting at wz. it's alot easier if u get a mana backsword. uni, elite, super, whatever, don't worry too much about quality. otherwise if u use nado, u will run thru mana pots in one or 2 hours. I use sv. set it up for tao. and record the route. At the place i bot, there's a wall, so i record the route doing 2 jumps up and 2 jumps down. it helps to cut down on time it gets stuck at wall jump. Preferably record the jumps in different places.
other than that, there's not much to tell. try to keep mob damage to u at 1's or 2's. The Mana backsword is a must. I now only carry 4 or 5 mana pots to wz b/c my mana backsword keeps me filled up when using nado. If ur gonna lvl fire met, then load up on chant pills, and check back after about hour and switch to nado.