As per the HSTPA, any changes to a tenant's lease whom have been in place for over 2 years requires a minimum of 90 days notice, regardless of what the lease (or lack thereof) says.  

Once those are done(by Spring time) I am going to save up $$ to lease/buy a bigger warehouse.

The greatest control point is before that first lease.

would that void the current lease?

If you're living in it now, you'll probably be required to have a signed lease in place as well as proof that first month's rent/security deposit were collected in order to get a DSCR loan (they're business purpose loans and don't allow owner occupancy).

I'd try to get a 6-month lease at a below-market rate to attract a tenant.

@Will Jones, we are in the process of putting an offer on a piece of land in where we will build a building for one of my businesses and then lease out the rest of the space.  

You have a natural advantage with other baseball players and providing them leases that fit their needs.Knowing a couple of others who have played minor league ball, your real estate strategy is going to be tricky because you will be very busy with baseball and it's travel. 

.), and you've made your House Rules clear, then don't sweat the small stuff.By that, I mean- you'll have guests who have 5-star ratings but can still leave a mess or damage (other owners didn't report accurately or it was complicated) but you have recourse via photo evidence (your cleaners, etc.) to ask for reimbursement (or use something like AirCover, etc.).

Your PM will be able to help you manage everything from leasing, regular maintenance to bigger ticket items like replacing your roof and managing tenants.