Then you would register the Wyoming LLC as a "foreign llc" doing business in WA. 

A foreign company can not use state courts unless you create the business in the state or register as a foreign company.You will need to create an operating agreement.  

I'm a foreign national so my cash outs are capped at 60-65% LTV so even though I got great deals I still reached a point where my capital is now locked into these rentals.

As you might know already, a lot of big corporations and wealthiest people of the US have moved to Miami area in the past 2 years as well as families who follow better lifestyle for their children's future and themselves. make sure you buy a somehow unique product (for ex; water view, flexible layout, high ceilings, building amenities etc). 2. 

JonPaul, there a bunch of Foreign National options for this client of yours.

Honestly, you should have just stopped at Facebook.There’s nothing quite like receiving an unsolicited online message, random proof of funds, complicated background story, sketchy work locations, and a foreign accent to scream scam any more loudly.

On the other hand, Florida continues to be a highly desired market for out-of-state and foreign buyers, keeping demand strong.Given these factors, what are you currently doing with your condo investments in South Florida?

Because real estate agents aren't going to play buyer agents for foreigners that maybe are going to buy, unless you're high net worth and looking for expensive properties.

For ex you're putting $10k in at your employer then you could only put in an additional $13k into your Solo 401K.  

Yes, injecting a lot of out-of-state/foreign capital is great and certainly will help boost the economy.