Vacancy looks a bit low, i typically do 1 month or 8%.  

Typically 20-25% down.

What are typical terms for private money investors? 

These are just some of what you may need along the way, the big box guys typically don't have all that?

Do 2 bedroom single family homes typically sell after you have rehabbed them?

Rents are typically 0.9 to 0.95% of value for nice homes and over 1% for homes in need of some TLC.

These types of deals typically would be a yield play, or tax shelter for folks looking to deploy capital (early in the build).

How long do you typically wait before following up with a seller?

If you do, and you're buying the home at a deep discount (as is the typical wholesaler's way of doing business), wholesaling is a violation of that duty, since you're not working in the seller's best interest.

I have read that the tenant is typically more responsible for the general upkeep on the commercial property, is that true?