Now, I'm beginning to pursue other properties and want to establish LLCs to hold everything.

I may be a bit biased (I'm a Quickbooks Pro Advisor), but you might want to give Quickbooks Online a try.

When I try to go to a website, and I see that a company only has a Facebook page, I'm a little suspicious that they're not an established company that I can trust.

This response neither constitutes legal or tax advice nor establishes an attorney-client relationship.

Establish tour goals and talk to your CPA and attorney

@Ian Ippolito I wouldn't make recommendations for other syndications out there without vetting them properly, but as @Ryan Groene mentioned above, there are MHP guys across the country who have established a good name. 

Once you have a steady income THEN focus on getting established as an investor.

Who do you use and recommend? I need some help planning for and minimizing taxes. Personal and Business. Located in CA.

He is credited with establishing the Julliard violin school.

We'll take any and all advice we can get- especially when it comes to non-traditional funding, establishing our team (especially contractors), and establishing relationships.