Just make sure to properly clean and seal it (the existing floor) so that the adhesive will properly stick to both floor and vinyl planks.  

Under most office leases, you are going to be charged extra for all the operating expenses of the building, from taxes and insurance to security to cleaning the restrooms.If you need any work done in your office, you have to go through the building management and use their contractors.

I also think you are elephant hunting with a .22, not a BB gun, but still under powered for the size of the project to start off with if you don't have RE experience, and that too can make investors gun shy.

Does that mean they'll be on the hook for the bill or it's attached to the home anyways so if that bill goes unpaid, the home is at risk of losing power if not paid?

You can find a Greater Boston Real Estate Board TAW agreement free online and print a few copies. 2 - Personally, I would say if you have good tenants (clean apartments, long-term tenancy, good payment history, etc...)it might be best to leave them as TAWs but just have them sign a written agreement. 3 - I'm not  a fan of long term leases for apartments.

Just a second thought and what I always say up here is it's our market and if we don't clean up after ourselves - we get to live in it. 

If you chose not to wholesale it but keep it can you pay for it to be boarded up and made safe including keeping the landscaping and surrounding areas clean and likewise safe?

If a landlord has a lot of short-term tenants for only 3-6 months as a time, there may be extra clean up and repair costs associated with get the unit ready for new tenants. 

They will use the overlap in leases to move and clean the prior place. 

That business didn't survive my multiple trips to Iraq, so I'm cleaning the building out so that I can rent it also