Personally, I completely ignore Finesse and still manage to have ~2k or so. It seems to be "enough". At least, I'm noticing a lot of skills getting BPE'd. I think it's more important for LMs and Burgs, who need to apply debuff effects reliably whether acting in a CC or DPS role, than us.
As for Tact Mit, 50% is plenty for a non-tank.
[b][SIZE=3][COLOR="#FFFFFF"]Cainwen Ciaphas[/COLOR][/SIZE][/b][COLOR="#C3C3C3"], Captain of Crickhollow, [url=http://tvtropes.org/pmwiki/pmwiki.php/Literature/CiaphasCain]HERO OF MIDDLE EARTH[/url]!!!
[i]I will not be pushed, filed, stamped, indexed, briefed, debriefed, or numbered![/i] My opinions are my own![/color]