Do not let maintenance issues sneak up on you.

AKA very easy/simple things that require no actual part replacements or major work.My fear is that when I hand my portfolio over to a PM I will be getting a lot of high price maintenance expenses for service calls which might raise my expenses dramatically.

When I ran my numbers, I ran with increasing the rent $50 right away and then over time adjusting it slowly with the tenant to market rent (or market rent to a new tenant if this one left).It's not a cash flowing property as is when considering variable expenses, but is appealing to me because of the maintenance already done, purchase price, close to home (so I can work on it with my kids to teach them), and with some businesses I can do 2+ year leases for a little more stability.I would like the seller finance so I can keep more reserves as I'm also looking at a STR cabin purchase.

I'm concerned about just a few things: being able to keep the zoning for low taxes (there's currently horses on it), no liens/back-taxes etc, and maintenance required.

Low rents, high turnover (the two are related), lots of maintenance.

I thought about going the route of building my own team of maintenance people but I am having trouble in that department. 

You learn a ton: what it takes to property manage, how much maintenance is, dealing with contractors, estimating costs, etc.

As everything sits now, after all expenses including mortgage payment, maintenance, capex, vacancy, etc... this property at the above rate will profit $464 per month!

If the neighborhood is as bad as the purchase price suggests, you need to also include a realistic initial Renovation cost, and even more importantly, a monthly allowance for Maintenance and Cap Ex (say, 10% for each, and the same for Property Management).What's that? 

For example, TenantCloud allows you to manage 75 rentals for FREE, to include tracking properties, tenants/leases, maintenance, advertise vacancies, etc.