The almighty THF sub with Sneak Attack and Gilfinder/TH. O_o...

If you had a sub(preferably BLM lvled to 10 too) then it wouldnt be that hard, take a hammer and a shield and start paralyze and whacking. You can use BLM sub nukes to finish off mobs on low health. Just stick to a Bronze Hammer after level 5, and fight like how i do without Hexa/True Strike..the war of outlasting the opponent. Take Decent Challenge flat at most, anything more than that and even some Decent Challenge High DEF or Evasion can be a hassle.

Once you hit 11 with CureII its usually depends on the party, but since i make most of my own..a week max to get from 10-20 in valkurm. Probably 2-3 days for me but if you are casual a week max.