I understand that the credit agreement, loan doc, etc. will have defined terms that would most likely answer this question, but for now, let's ignore any comments about reviewing the loan docs.Has anyone ever tried this approach? 

Ask prescreen questions when they call to make sure they meet income, reference and credit guidelines.3.

I actually live in Pewaukee - LOL - voted one of the up-and-coming and best places to live in the country, if you give any credit to these sorts of studies.The City Of Milwaukee is mostly a craphole.

One girl has credit score of 400, her supposed boyfriend has credit score of 650, 2 other adults will also be moving in with them, which is the height of our limit of 4 people per room, I don't know the other 2 credit scores yet but of course I'll screen.

To get into commercial you'll need much larger downs and commercial credit. 

I don't want to shoot myself in the foot by taking out this line of credit.

If you can do 4-5% down payment and have a decent credit score, most local lenders (mortgage brokers, credit unions, local banks) will be able to offer you a way better (overall) deal than an FHA loan.

I heard using line of credit for maintenance is what you should do.

@Joseph Blanchett, as military, traditional lenders will be tripping over themselves to lend you money assuming you have any type of credit history at all.

Its scary having this many credit cards but you also have more available credit.