I want to explore options to at least recover what I invested with them and it’s substantial.

With a Solo 401(k), you are not required to maintain a "custodian" unless you are interested in exploring that avenue.

Focus on actionable steps like analyzing deals, attending local meetups, and exploring niches like wholesaling or house hacking.

You can learn a lot about areas and rent rates without asking a PM so explore that first

Unlike investing in random properties, their methodical approach ensures that each investment is strategically placed for the best potential.

Yes, the BRRRR method can work with multifamily properties, and many investors have done it successfully.

I would like to explore the possibility of getting my first property in CC custome built.

In real estate I stick to tried and true methods for 28 years now.

Also, it often helps to connect with a local agent/do extensive due diligence on renovated/new construction properties to see what the property may sell for or appraise for (if doing BRRRR method) as that can impact the price you should pay.

However, have you explored other investment strategies?