The fact that you spent the money on an LLC and got a credit card for it before you had a plan is baffling and concerning to me.

As a result, they are more concerned with smaller details and the daily functioning of their company or portfolios.

@Stephen Dallas  While I am not scared of major renovations (my last two projects have required renovations that were close or excepted the purchase price), I would be more concerned about the cash flow.  

I wouldn’t rent to individuals who don’t make at least 3x rent (and ideally they’d make more than that as that’s just a floor), I also wouldn’t accept a co-signer who doesn’t make at least 5x rent because they have their own bills and expenses, even if their credit scores check out I’d be concerned about them bringing in enough on a monthly basis to ensure that I was always getting paid, I’d honestly rather my unit be vacant than to rent to unqualified tenants ESPECIALLY in New York where eviction is a nightmare and the state doesn’t care about landlords in the least

Should I be concerned ?

But now that it's a public safety concern, can we legally remove all the trash they left out on their driveway? 

With the market the way it it, all of the really good contractors are super busy and usually outside my budget so you are left with people who aren't really concerned with the timeline or the quality because they have 10 more investors calling them to walk properties.

A normal purchase will allow you an option period to have a full inspection which includes looking behind the electrical panel , under the home, in the attic etc. from there if your inspector sees something of concern they will include that on your report and from there you can get second opinions from a plumber, electrician etc. this is always my biggest concern for first time investors who buy from wholesalers - no inspection, all cash, many times inaccurate repair and ARV figures and no one in your corner.

My biggest concern is I already have a good deal of debt from college, about 100k, is that something I should get rid of before investing?

The experience you have leasing up and managing your current properties is the same thing you will be doing in larger multifamily, so I do not think you should be concerned about having enough experience.