First deal, good or bad?

[Chris Wood]

I bought a duplex this summer for (was going to list at 129k, before we started negotiations) 115k, rent is 600 for each side.  Also seller paid half of closing costs. No vacancy (one unit has a 4 yr long term tenant, and other side has new 1 yr lease) and plan on doing my own property management as well as repairs.  My loan was 30 year fixed at 4.5%, with 25% down.  My payment is 660 and my insurance is 900 year.  Please let me know how I could have done this deal better!