As I read it, you are not taking into account vacancy, repairs, or tenant placement costs for any of these. Bearing that in mind, all outgoing numbers are impossibly low, as eventually all of those things will occur. So, we'll keep that in mind when we look at each:
SFH #1:
Outgoing Min: $1684
Incoming: $1800
Difference: $116
After figuring in bare minimum vacancy, repairs over time, tenant placement, property will be badly cashflow negative. Should sell.
Town Home #1:
Outgoing Min: $1064
Incoming: $850
Difference: -$214
Property is badly cashflow negative without even factoring in vacancy/repairs/tenant placement. Should sell.
Town Home #2:
Outgoing Min: $1507
Incoming: $1500
Difference: -$7
Property is slightly cashflow negative without even factoring in vacancy/repairs/tenant placement. Should sell.
SFH #2:
Outgoing Min: $2656
Incoming: $2800
Difference: $144
After figuring in bare minimum vacancy, repairs over time, tenant placement, property will be badly cashflow negative. Should sell.
The short answer is that to varying extents, these are all costing you money over time. Unfortunately, I don't think you did yourself any favors by buying any of these. Were it me, bearing in mind that buying and hoping for appreciation is a suckers bet, and that you should therefore be buying for cashflow, I'd sell them all as soon as feasible and start doing a very critical analysis every time if you decide to go back into real estate again.
PS, $220K is "reasonable?"