Buying first property for sale by owner. Need help

[Chris E.]

So were selling our first live-in flip in 2 weeks, I've found another property to buy that is for sale by owner. I made the seller an offer and he has accepted, whats next? I'd like to get a purchase/sale agreement to him asap to lock the deal down because I don't want to give them enough time to tell anyone they are selling it and receive a higher offer on it. How can I go about doing this? Should I just contact an agent and ask them to write an offer for me? or would it be better to find a real estate attorney or just call a title company? about How much would I expect to pay for this?