For dps 31 det, 35 (44) acc, and 9 crit is ideal. It's more efficient to slot det than crit on Novus, and you can pick up crit elsewheres without much issue.

For pure healing, crit/det.

If gil is an issue, add in a 3rd/4th stat: pie or spellspeed. Pie is slightly more efficient to slot, in the same manner that det is.