In my fully amateur opinion, there are a few things here to consider:
- you want experience as a landlord/PM
- you want to buy in your area, since you know it and are local
- you're not getting advice from your father as much as you're getting instruction
I'm with you on points 1 and 2. Getting experience as a landlord and buying where you know the area are both things I think are smart to do. I'm not sure that this is the place I'd start: a 10 unit apartment building where the margins are tight and you're cashflow negative. My concern would be that there's a run of bad luck (an eviction, a domestic disturbance with a restraining order, and vandalism from teenagers all in the same month), and you don't have the cash reserves to deal with it because you're putting money into the property every month.
I'm a bit concerned about your dad, though, because it doesn't sound like he's listening to and answering your objections. More like he's just talking over you and telling you what to do. If he wants this place so bad, let him buy it. But this is your life, and your financial future -- don't do the deal unless YOU are satisfied that it's exactly what you're looking for.
Now, one part of this deal that I think is being overlooked is that ANY cashflow is pretty awesome, since you're putting this together with no cash of your own in it. If you're able to raise rents up to close to market level (and market rent for a place like this is DEFINITELY information you'll need to lock down a lot closer than you currently have it, because it's crucial info to not only the profitability* but also the value of the property), AND you have cash reserves to guard against the run of bad luck, I would consider doing the deal. Keep in mind though that a lot of the experienced multifamily investors around here look for $100/door cashflow as a minimum. That may be unrealistic for your market and the huge PITI costs, but something to consider.
*experienced MF guys, correct me if I'm wrong, but isn't the value of a property this size calculated not by market comps but instead by gross rents? In other words, if our OP could purchase this place and raise rents over the next 6-12 months, could he either flip the property or refi and force enough equity to pay off the seller carried 2nd? @Aaron Montague @Roy N.