For epic feats, I'd say you're going to want
Overwhelming Critical; for that you need Cleave & GC, which you don't have. Also, you may want to consider the classic bard 16 / rogue 2 / ftr 2 split so you can take
Inspire Excellence as your other epic feat, which requires Inspire Heroics (bard lvl 15). [Bard 15 / rogue 3 / ftr 2 is also an option if you'd rather have +1D6 SA than lvl 6 spells.]
EDIT: so with 11 feats total (base 7 + 2 ftr + 2 epic) on a 16/2/2 split, I'd go with: Toughness, PA, WF:S, Cleave, GC, IC:S, THF x3, OC:S, Inspire Excellence. Kinda sucks not having any metamagics, but I suspect that will be your best loadout for melee DPS + full buffage.