Congratulations on your first negotiation!
1. With no idea of what property values and rental rates are in your area, I'll say that the rental rate seems high for the price of the home (unless you are getting a phenomenal deal). Could I ask where you got the rental rate?
2. Also, repairs seem low...that is unless it only needs minor cosmetic repairs. How did you arrive at the repairs? Have you had an experienced contractor take a look? Be careful you aren't going to have to throw more money at it to get it rentable.
3. Unless you get one heck of a deal, I would never offer to pay for the seller's closing costs. Every dollar counts when you are investing, and it can get out of hand. If it's done, it's done...just beware of getting emotionally attached to a deal to the point that you are costing yourself money. There are other homes out there, it just takes work finding them! Make sure the numbers work, if they do, jump on it.