If anyone has tips or things to watch out for, please provide.  

If you work with a good investor focused agent they should provide you with a solid book of contacts to help build your team.

Flipping requires you to continue to do deals to make money while renting provides a steady income.

These options are usually much more expensive, also, and very few private/hard money lenders will provide take-out financing.

The most common strategy is to use the existing equity to put into another downpayment and buy another property - this provides an effective use of leverage as you are expanding your portfolio.

You need a specialty provider firm specializing in these types of account to set up IRS-compliant plan for you.Solo 401k plan is not for everyone, you must be eligible in order to establish one.

Focus on performing your day to day operations in a manner that will reduce the risk of claims in the first places such as hiring reputable service providers, sign contracts each time you engage a 3rd party vendor & collect insurance certificates where you are listed as additional insured from everyone who performs work on a property you own or provides a service related to a property you own.

Any help that you can provide will be greatly appreciated.

With all of this, get really specific about what you are wanting to provide in terms of a resource.

The special assessment seems high in general, so which building it is would help provide some insight into why and what you gain from it etc.