I am planning on doing all cash on an offer to make it more competitive and then getting a mortgage immediately after, but I was advised against doing this by a lender.

Its not advisable to hold real property in corporations, and S Corp are more corporate-like.Just stay with the default partnership and deal with the 1065 and K-1.More importantly, discuss with a qualified professional or two.

A lot of landlords are advised to put their properties in the name of an LLC for asset protection.While this is basically true, the reality isn’t what most landlords think.If a legal issue occurs with your property resulting in a lawsuit, there’s a decent chance the plaintiff’s attorney will be successful in “piercing the corporate veil” of your LLC if you were sloppy and being able to sue you directly.

I would advise you to read "Real Estate Partnerships" By Ashley Kehr and Tony Robinson.

I would advise making sure you have a trusted, fully vetted property management company in place as you are bound to run into tenant issues, evictions, etc.

However, I would advise staying away from anything located a hundred miles south of Birmingham due to the risks associated with the Gulf area, including parts of Louisiana, southern Mississippi, and southern Alabama.

Even if there is newer wiring in parts, it may be advisable to re-do all of it. 

And I advise then to have a longer horizon. 

Pls advise

Any advise or resources you would recommend for a beginner?