Plus, I have found that most people affiliated with RE work on Saturdays (contractors, agents, etc) so you shouldn't have to take off too much time.

I might have to rework some of the drain field though.

If so, I may have to re-work my strategy as far as my finances and how many rentals I would be able to take on per year.

I promised my realtor that I would ask other investors' opinion hence I asked in BP :) I work in Madison as a computer consultant so the RE work I do is in Madison.

Are my dad's estimates good, or do I need to rework them?  

It also provides a fire conduit between units.2) Depending on how the ductwork was run, you may be looking at substantial rework (opening walls, building bulkheads, etc) to separate the two units.If you have a boiler and hydronic heat, there may be a similar degree of effort to separate the plumbing runs - unless the system is new enough to have been installed with independent loops from a common manifold.  

Use own judgment on a positive response. 0-3 bad/negative/so-so responses rework pitch.

Using mortgage services, mortgage originates to do the rework paperwork, ....

I intend 4 to be someone who lives off their RE work.  

I reworked some expenses and added management expenses.