Alongside my work in real estate brokerage, I also own a short-term management company called HAVN.

Come to find out, it's because they want me to use their own mortgage company. 

There are third-party admin people that can help you set up and administer your solo 401k for a relatively inexpensive fee it's about $300 a year I currently use one company to do the same for my self-directed Roth IRA.I'm looking to go with the 401 option because I can do a 100% contribution up to $20,500 now.that's just a little over my net in one month on my rentals.

I met with three companies and the guy I hired did a great job, fast and had communication.Let me know if you want his contact information.

@Ashish Acharya @Michael PlaksAshish correctly points out that LPs are subject to more specific rules, however the courts have found that a limited liability company (LLC) interest is not treated as a limited partnership interest.

Do you know any companies that help with this process or who can expedite the process?

I really need to use a property management company.

If the property is owned by you personally, use a personal account unless you have an agreement where the LLC is the property management company.

Does anyone know of any good insurance brokers/companies in the Sacramento area?

Yes correct, on all of that  Rehab I can do it all built houses all my life,Work for a sewer excavation company currently   sewer mainline needs fixed if I want to flip it $7,000Roof I would redo ($4500) has metal on it now but looks original Vinyl windows ($1500)I haven’t seen inside of it yet, but renters been there 15 years so kitchen remodel $10kAnd then possibly bathroom and flooring.