Even free Tools like BASELANE can help reducing cost or even allowing you to self manage. 

Any help would be greatly appreciated and grateful to be part of this community!

I'm thinking of signing up for Pro (mostly for tools / calculators) and also checking out other rental calculators online.

I highly recommend seeking the help of a buyer's agent who can: 1. find out any information on the property on your behalf 2.

As @Chris Seveney mentions LLC can be pierced by the courts and you can be help personally reposnsible for LLCs debts.

They don't need it to finish the rehab, they told me they would pay the rehab at delivery.Basic research on the persons doesn't yield much result but we don't have the same background check possibilities and tools you have in the US.In any case, I would have my local lawyer look at the deal before signing anything.

I don't normally say this but I wouldn't pay the PM anything unless they fix the entire situation without any of your help.

I would appreciate references to experienced professionals (architects, arborists, GC, surveyors etc.) who can help me negotiate and get permits for a short plat in Bellevue, WA. 

The rehab on your primary will help with the cash out refi, there will be a new appraisal which should reflect the higher market value. 

Many of them are encumbered by a low ltv loan to a friend who helped me get started.