The length will improve, it's all the padding in the heel area and once it compresses a little and your heel settles into the pocket your toes will move back from the toe box. It sounds as if 7.5 is the right length. As to the rest of your foot, try this, put the skates on, don't tie them up. Do they hurt 15 minutes later? If not then it's a width issue, they are still to narrow for you when tied up. Not all is lost, you can do a couple of things. Wait till the shop opens then ask them to stretch the boot for width. Or bake them again, either at home or at the shop but this time pad the sides of your foot with something like 3mm neoprene rubber strips or gel pad strips. this will force the boot a little wider at bake time, then you remove the strips and the fit will be looser in those areas.