I would say that sounds like a solid plan to me 

Root intrusion is rare with plastic pipe because that means a crack that's going to admit soil as well and eventually bust completely, so if you have roots in PVC you might as well plan to excavate.

I love where you mind is at and how organized your post/plan is.

Putting a long term tenant in a property here that you are BRRRRing won't cash flow unless you plan on leaving a good amount in the deal to do so, but that defeats the purpose of the BRRRR. 

Quote from @Alex Ng: I plan to purchase a property with an executory contract.

Planning to start a complete home remodel (interior/exterior) on a home (currently 837 sq ft), kitchen and bathroom bump out, and add an additional bathroom. 

@Stuart Udis plan A was to reposition as small office and keep it that way.  

if not, how would you plan to pay that bridge loan off before the balloon comes due?

Some investors prefer to start saving for these ASAP, while others plan to deal with them when they happen.The unknown is Maintenance costs, which are often dictated by how "hard" a tenant lives in a property.

Do you plan to further develop the agent side and turn that into a full time thing?