Well, still working on sealing things up this weekend. My cousin's father in law came over with his hammer drill and hung the plate for me. Looks a lot better than my melted foam.
The next thing on the list was my horrible outside access basement door. You can see from the picture that a
little air was getting through it. It also likes to leak water in when it rains.
So, I had the recommendation to get a metal door replacement. I got a tip that you can get damaged doors from the home improvement stores super cheap. So, I went and checked it out. I ended up finding a nice grey door with two holes in it (lock and handle). There was a little damage on the top where the metal didn't fold over just right, but nothing that prevented normal operation. So, I picked it up for $3. The block off for the door cost more than the door itself at $5! So, along with those two things and weather stripping, this is my $20 fix.
I do still need a good way of sealing the bottom edge though. The door butts up against the side of the lowest step. Any ideas?