5% vacancy may be a little light, and there's no turnover costs in this (beyond the vacancy itself, you'll have expenses such as utilities for the few weeks it's being turned over, plus paint, carpet, etc.), but in general you pretty much nailed everything, assuming the numbers are accurate (have run rental comps for the rents, have exact insurance - which actually seems high to me - and taxes).
The management is probably a little light as well (you did 10%, which is about standard monthly, but then they also typically charge a 1/2 months' to 1 months rent to get it rented, which adds another 4-8%), but that may vary in your area. Otherwise you may have advertising costs, or otherwise. You set the expenses (without the HOA) at only 38% of the gross rent, which is quite low. Even with saying no exterior maintenance, you will be paying for that through HOA fees, special assessments, etc.
The other thing I hate about an HOA that high is HOAs only tend to rise over time. And with ones that big, they rise proportionally.
1400 rent, 328 HOA, for 80k is potentially viable.
Honestly I wouldn't be jumping on it, but nor would I pass right away. Based on the figures given I'd start more due diligence into the HOA itself, the neighborhood, the city's demographics and trends (jobs, etc.)
At least you didn't do the typical gross - HOA and PITI and come up with 542.81 cash flow, what so many people do when they start.
You've got a very good head on you, or good head for numbers, for a beginning real estate investor, which will serve you well.
Best of luck!