Buying Duplex w/o Agent. Should RE Attorney suffice?

[Jordan Rahman]

The property I'm looking at is off-market, and the seller is willing to sell at $220k, but stated that if there's a buyer's agent, the price would go up. I'm looking to get this property under contract with an FHA loan. I've checked out the property, one unit has a tenant with a 1year lease, and I plan to occupy the other side. The property is in great shape, and is move-in ready.

With this transaction being direct buyer to seller, I'm not exactly sure how I should proceed. This is my 1st deal, and I only want to continue the transaction contingent upon the appraisal showing that the house is worth that much, at least, and the home inspection. 

Is it cost-effective to have a RE attorney draw up the contract/paperwork to protect my interests, and kinda help me navigate?  Is there an alternative, less expensive way to go about this--maybe a website with RE contract templates and the like?