I’m rather new myself, but my decision for choosing a brokerage largely came from what I needed now.I’m active duty Air Force and found that many brick and mortal brokerages wouldn’t work for me.

With cash only, your cash on cash will be much lower without leverage but you will eliminate a lot of risk associated with leverage so consider the trade offs.Forming an entity with multiple partners will require an operating agreement with the duties and responsibilities for each owner in writing.

Primary duty is actually Financial...collecting maintenance fees, paying vendors, processing collections, and accounting for every penny clearly and thoroughly using industry Best Practices.As a Board Member yourself, you should quickly learn about your Fiduciary Duty, the Business Judgment Rule, and get a feel for your Governing Docs to see how your particular project is supposed to be run.

I'm an active duty member who invests.

TC's can cover your escrow duties, showing agents free up your time when working with buyers.

There are many issues that need to be anticipated: duty of loyalty, profits and losses, how does the business end, etc.In a not so perfect world the same attorney can do it with a conflict of interest waiver.  

They just choose to keep from increasing their own monthly fees, which is a violation of their fiduciary duty to all unit owners.

When you deal with investor money like me, it is your duty to get the best information available.

I dont think you have a duty here.

People need to trust you to be wiling to lend to you and so it's vital to have a good relationship with them.