Taking into consideration any repairs, maintenance, and unexpected vacancies, what would I need to be netting from rentals each month in order for the deal to be worth it?

One of the great benifits of the NNN lease property is that you are not caught off guard by things like property tax increases, lots of snow removal, unexpected repairs, and things like that because most (if not all) expenses are passed along to the tenant.

One unexpected move out and you're paying the mortgage.Where as with an apartment, you have economics of scale working in your favor.

Can your reserves handle an unexpected $150k expense?

There will be some unexpected dogs and some actual diamonds.2.

Cash flow is great but you are only a couple of unexpected capital improvements away from a mediocre if not negative return.

Not so much after you become familiar with the components and why each is needed.

Now obviously to sell to other investors means you will have to buy at a significant discount or a at non-retail (wholesale) price, but the biggest component to wholesaling is selling quickly to OTHER investors for cash.

Once again, I'm sorry to insult you, but in your post you randomly confuse income statement components with those belonging to balance sheets.

I spent the other $2400 on unexpected repairs (HVAC & plumbing).