Agree with the previous posters.
A PM company will charge you 8 – 10% of the monthly rents and may do very little to earn that. They have no incentive to minimize your expenses, and if repairs are needed simply place phone calls to their favorite contractors.
Better to keep rent low so you can be choosy about tenants and thereby minimize future problems. Pay a friend or relative here to take care of things, and be generous with their compensation arrangement, but do it on a piecemeal basis, not as a straight percentage of rent.