Please take this advice with a grain of salt! 

This is outside my scope, so take my opinion with a grain of salt, but if this person will be brining you new properties, I would give them a percentage of net profit on that property, to incentive them to keep costs low and revenue high.

I'm looking for someone from Utah, specifically Utah or Salt Lake Valley, to help me answer some questions.

So you have to watch out for the tenant brokers and take what they say with a grain of salt.  

As Nicholas mentioned, most CPAs should have the resources to research state tax laws as necessary, and/or have colleagues who are SALT (state and local tax) specialists.

I'm fairly new here as well so take my opinion with a grain of salt and hopefully some more experienced investors can chime in as well. 

4) With the new SALT Tax in place, how much tax credit can I claim?

There are a lot "RULES", just take them with a gran of salt.

Lastly, I am terribly pessimistic so take my observations with a grain of salt.

Oh, since you are local to the Salt Lake area make sure you connect with @Jeff Rappaport, who hosts a wholesaler meetup every month that is really awesome.