"Could this be a time to pickup a decent property for a bit of a steal there (at least relative to how crazy high the market has been recently)"Yes exactly

Really no reason to attempt to do this with an LLC.

this is old  tried and true method of simply having you pay them to get credit cards .. there is no need to pay for this service.. unless you want to of course.. there is no magic bullet ut there that is going to give you credit and financing unless you actually qualify for it.But zero interest credit cards are used by some to do rehab and then pay them off issue is though your fico score drops like a rock the second you take on all these CC.Also starting out there is zero chance of getting any kind of business line of Credit that is unsecured.

Suburbs at this time. 

This is a trend you will observe across the country, not specifically in Philadelphia.

What made you interested in investing in this type of deal?

If you want to be a professional in this business you need NARPM

Does this sound reasonable?

Im sorry this is happening.

You need to just take the home you want to do this with and get some pricing (and make sure the city will let you do it).