I have plenty of stress  and headaches doing that .

I'd be interested in trying out their services...sounds like a great deal!

If so, I'd always put the lowest amount down.

I want to continue to grow and learn about real estate and become financially freeHi Vincent, I'd recommend that you look into Columbus Ohio and as someone who works with a lot of out of state investors - there's so many catalysts for why you should invest here.

I'd also suggest reaching out to a local agent in your target investment area - they'll have good referrals to provide you for your lending needs. 

1 I don't have 100k to put down and 2 I'd like to finance the 100k some way.

I also received my broker's license tho (solely to become more knowledgeable while making personal real estate investments), but I don't see their logic, so I figured I'd turn to BiggerPockets to help me better understand what's going on. 

Hard for me to get to specific as I'm not super familar with the market in your area however one thing I'd say is also take a look at modular homes as there is a fairly significant difference between a modular home and a manufactured home.

Before we purchase the property, I'd like to understand: when we pull permits for the rennovation, would we be required to demolish the front section to bring it into conformity on the setback line or does that typically get grandfathered in?

I'd suggest joining the ones for areas you plan on wholesaling in.