At one time (70's and 80's) Mountain Goat ran a mini bus service to Wasdale. However, it looks as though they only do tours nowadays. It's a shame nobody else has taken up the idea of running a mini bus service to Wasdale Head.
I find their trousers (or at least the ones I have tried on) have very strange sizing. I am tall and thin, with thin legs, but the trousers all seem very tight round my thighs. However, their base layers and bike stuff fit me OK. Have also got one of their bikes as a winter bike, which was very good value for money.
Unfortunately, the nearest shop is about 90 mins drive away. Their web site seems designed in such a way that the fastest way to find anything is just to Google it.
Also technical axes are generally poor for self arrests. The pick just slices through the snow with little braking effect. Years ago I decided to try and brush up my self arrest technique using a Chacal and found it almost impossible to stop once I had gained any speed.
Edit: I suggest you keep an eye on the UKC Snowdonia conditions thread. Conditions look marginal for gullies ATM.
If you are using something like microspikes the N Ridge of Tryfan, Bristly Ridge and Ddaer Ddu (Moel Siabod) ridge would probably be OK. If you want to climb gullies I would definitely recommend "proper" crampons. Also climbing with two axes feels much more secure on steep snow slopes. Seniors Ridge, above Idwal Slabs is about the same standard as Y Gribin.
Grade I/II gullies include Central Trinity (Snowdon), Banana Gully (Y Garn), Parsley Fern (Snowdon). One potential problem with gullies can be the presence of a large cornice at the top. This can sometimes a short steep difficult section and avalanche danger when it thaws.
If we get a really hard freeze the stream to the right of Idwal Slabs is a good and not difficult intro to climbing on water ice.