What I'm trying to achieve is having multiple cash flowing properties.

That is how I got into it almost 20 years ago in Rochester & it has afforded multiple additional purchases & "practice" in this line of work, all while maintaining a regular full time job. 

Or option B is to list your property at a price that ought to generate multiple offers that way you can move your your existing property quickly and lock in your up leg property with minimized risk. 

Because I called him and HE ANSWERED ME (after my realtor tried multiple attempts of contacting him).What do i do?

Again, not difficult, but not ideal since amongst other reasons, the borrower can get confused when they have multiple parties reaching out to them (the servicer on payment stuff and the lender on insurance items).

There are also multiple certificates, some held by other people.

I've spoken to a lot of GC's and all want the big jobs, and kindly declined to work with first-timers until we have multiple jobs going at once.

I suggest (without knowing the exact street address of your listing) you price it at $199,800, capture all buyers looking up to $200k and catching those above it and hope for multiple offers at that price point quickly.

Most banks dont charge anything different for LLCs from a financing perspective as long as you sign a personal guarantee on the note.  

My 90 day anniversary will be 04/16/2018.2) If I get a quick contract on the house, will a lender begin underwriting a loan for a perspective buyer since the closing would happen after the 90 day limitation will have expired?