Did you work with any real estate professionals (agents, lenders, etc.) that you'd recommend to others?

Older style mixes with some added sand works best.Outside of that, if you really needed to, you could replace sections with cement block or poured cement.As long as the walls are true and not leaning or bulging, then it's just a matter of maintenance on the mortar from time to time.

Did you guys get them drafted by professionals or did you do it yourself?

There are so many products beyond just flipping or buy and hold.Like any professional field, you should do some basic research and decide what you would be passionate about.I did flipping for 3 years, then moved onto being a HML.

Training can be done by a professional organization, professional animal trainer, by the owner of the animal, or by someone else.

Did you work with any real estate professionals (agents, lenders, etc.) that you'd recommend to others?

Hello BiggerPockets,We are looking for some new professionals. 

We have an interested investor that will be flying down to meet with us in person mid-November so I am motivated to be able to furnish a professional presentation prior to this meeting.

But once again, you don't want to 'kill a fly with a hammer' on your solution so definitely give it the due diligence it deserves with a professional.  

For a professional system you can go with no doubt Aiphone GT series  system.