In reply to goatee:
For when the weather does come in - and Snowdonia is very much a target of opportunity rather than a banker:
for your solo stuff:
Snowdon horseshoe
Tryfan North Ridge
Bristly ridge
Crib Lem spur
Broad gully
Hourglass gully
Hidden gully
will get you around the area and give you a good introduction to the area, I'd add Cnefion arete as although its above your solo grade range, its feels pretty secure to me (YMMMV etc).