Hey, that's a great bike!
The plastics look like they are in perfect shape too.
I have an '88 that i bought in 2009. They are really great bikes and will last a long time.
They are very forgiving and with the right set of tires they'r like your own little tractor.
I'm on my second set of D606 tires and they fit the bike really well all around.
As for racks, I use a set of Hepco Becker. The outfit I bought mine from is no longer around but you can find them new.
Once you have the rack, any soft or hard cases will work.
You're going to have a lot of fun!