IMO I'd stay away from skill speed for a couple reasons. First it has diminishing returns, as it will drain TP faster (granted only an issue in longer fights and bards can TP song if needed.)

Second and more important reason is you need a ton of SS just to reduce your global cool down by even a fraction of a second! As an example increasing SS by 100 will only reduce your global cool down from 2.5 secs to 2.4 secs. All that extra SS still won't get you a extra skill in during BFB.

If you HAD to do stats on the novus other than det and crit, I'd go det and accuracy. Accuracy cap is going up with every patch, it will always be useful and give more flexibility with the rest of your gear.