I want to chime in with the 808 size talk. Probably not adding much than what's already been said, but fugg it mayn.
I had a pair sent to me and I was going to sell them on, as they were so tight in the toe box and felt like I might bust my feet up wearing them. However a mate mentioned to just try and wear them in a good bit, since his pair were the exactly the same and he was keen as mustard to skate them. Now they are perfect once he had a few skates in them.
I think it's best to either wear them in a good chunk of time as chillers and see if you can stuff anything that can puff them out a tiny bit, hell if you have packing paper from any other old boxes use that. Mine seem to be ok to wear albeit a tiny bit tight, but not enough to hurt my feet.
If I were to buy a pair I'd deffo try a half size up. Ironically never had size problems on NBs like most do, up until these.