They are really friendly and get things done quick and efficient.

Can this be done tax efficiently?

I guess what I would ask is, in what order should I approach these different individuals in order to maximize both efficiency and accuracy?

Also, is this a high efficiency HVAC system?

Just the way I have learned to do it efficiently. 

Some questions to ask (from @David Greene’s book “Long Distance Real Estate Investing”What experience they have managing rentals personally, how many doors their company manages, how long they have been in business, and what they feel their company’s strengths are, how they collect rent, how they enforce late fees, what systems they have in place to make things efficient, and how long they have worked for their current company.I hope this helps. 

It's much more efficient this way.

I let them go on for months, costing me thousands.But I learned and handle things much more efficiently these days. 

Maybe you will be better at estimating, or more efficient with the work.

Things that increase or decrease your rent are things that cause the utilities to go up or down, such as size, number of shared walls, utilities, appliances, type of heat, any energy efficiency features, etc.