DavidM,
When we rode this a few weeks back it was pishin' doon and had been wet all the previous week, but it was all perfectly rideable, if a little wet. The surfaces are mostly very good, apart from the section around Loch Coire Fionnaraich, which was a bit damp and soft. We were actually riding in the loch for a good bit.
Hopefully all the moisture will be well locked in by frost at Easter time and the routes don't go too high (450m for Bealach na Lice, 650m for the bealach out of Coire Lair). You'd get a good idea of snow cover by looking at the surrounding hills before you decided on your route.
The Loch Damph circuit is highly recommended as well, short but a brilliant descent 😯