Your best bet is to ask for referrals from professionals in the space: realtors, other investors, this forum, FB groups, etc.

Usually its a safer bet.

12 or 24 Month Bank Statement is probably the best bet.

What strategies have worked best for marketing midterm rentals in secondary or smaller markets like Portsmouth?

Ideally, I would like to use the buy and hold strategy, with a 50k budget to get started.  

Yes the Class feature Cost a bit extra which is a bummer bet the support for it is amazing, and it is easy to allow access for Tax Accountants to pull the reports they need rather than my clients playing middleman. 

Sounds like strategy call would make most sense to see what your goals are with REI and being an agent to determine if the organization I represent aligns with the direction you are looking to go. 

However, co-living allows you to acquire properties with as little as 0%-5% down, drastically reducing the amount of cash required.Instead of needing $100K+ to buy a rental, a co-living strategy lets you start with a fraction of the cost while achieving higher returns.3.

With the right strategy, it can become the foundation for building wealth.

Well worth it and the best strategy to start in my opinion.