I am looking to do 80-90% LTV, I would like to get some advise from you guys on different lenders and current terms (repayment plans, interest rates, etc).

You could quit claim it over later but then you are getting into legal which I can’t advise you on.

Is this advisable with the current situation?

I hear other agents advise clients to just dip into their reserves.

I am not offering you any real estate advise by using my analysis tool, I am not so familiar with the market. 

I will advise that if you do decide to sell it, timing the market is not something that many people are able to do successfully, as you still stand a lot to lose and not much more to gain.

And furthermore, I believe I have also heard that it advisable to have each rental property set up in separate LLC’s.

My property manager advised that duplexes and SFRs can have tenants pay for their own water, lawn, snow bills. 

All advise helps!

Challenging an appraisal may be illegal.It is not illegal to challenge an appraisal if errors are discovered, however be advised, no appraisal is perfect and there is room allowed for small errors before an appraisal will be deemed deficient.