I think its ace.
The first big climb is pretty tough, but you are rewarded. The DH sections there are great fun – you can also cut off to ride offical DH tracks fairly easily.
It rides pretty well in the wet – we went a few weeks ago and it was grim but the trails held up well. Its pretty rooty so can get a bit slippy in the wet.
Eastridge isn’t far either but having ridden that in the rain, I wouldn’t rush back if the weather was going to be suspect.
I’ve done Long Mynd too, and given the forecast for the weekend, I’d pick Hopton because its in the trees.