I'd still go. You'll probably just have to enter in more quietly and slowly as the deer will probably start to move when or soon after you get out there. And do you really need to shower? That could save a 10-15 minutes.

I'm in the same predicament as you. I get out of school at 2:34, get home at like 2:50ish, leave at 3 and get out to my spot between 4 and 4:30.