Subleasing because legally 2 units with one unit as an inlaw

[Joo Yoon]

Hello!

So I have acquired a property in Allentown, PA that I had originally thought would be able to convert legally to a 3 unit residential but it turns out because of a couple of issues it can't. The property consists of 2 units legally. The bigger unit has 3 bedrooms and 2 baths with a separate entrance. It is an in-law suite. 

My plan is to sublease the in-law suite. I wanted to figure out how to best go about doing this and had many questions as to the negatives of this strategy. Here are the questions that I have.

1) What happens if the subtenant does not pay rent? Can I evict them directly as the landlord or must the original tenant do this?

2) Is there a way to structure so that I have 2 separate leases with both tenants? (This would obviously be the best case scenario) I heard possibly using the number of occupants allowed that this might be possible? If so, how do I check?

3) As the unit does technically have it's own address, will it be a problem if the subtenant uses that address for legal registration?

4) Can the landlord collect rent directly from both tenants?

5) What other options would I have, if any?

Thanks for all your help in advance!