Thanks Rachel.
I find many slaters (woodlice!) in compost too, especially when it contains woody/stem pieces that are still decomposing. They will become less numerous after spreading because of having less place to hide, and birds etc can eat them.
So I would spread the compost and not worry.
Most at risk veg-wise are direct sowings of spinach, beetroot, basil etc so raising plants to set out will reduce likely damage.
