BerghausMen's Hillwalker Ii Gore-tex Waterproof Hiking Boots | Durable | Comfortable Shoes

Any Recommendations of what wax to protect them with

Do i need to get a bigger size to compensate for thicker walking socks?

I fancy a pair of these boots; but from the reviews, I can't work out if they are very good or very bad. Any views to help? Thanks.

Are these suitable for rugged terrain and sharp peaks, ie; Crib Goch?