Don't worry about NOI from what a realtor is going to tell you because each person will likely come up with a NOI, and would you trust their response anyways?

I'm hoping the lease is good enough that it contains some mention about tenants taking care of the property.My lease specifically forbids pets and in a couple of cases where I did allow pets, the pet addendum states this:  "Tenant accepts full responsibility and liability for any and all damage, injury, or action arising from or caused by tenant's pet(s)." 

It would be very helpful (and you might get more responses) if you use punctuation and formatting.

Sorry for the long due response!

I'm considering starting an LLC that I can run rental income and expenses through for the main purpose of starting a retirement plan (probably a solo 401k) so that I can start socking away some income into a tax deferred account.

This response neither constitutes legal or tax advice nor establishes an attorney-client relationship.

Your ideas will most likely change multiple times before you fall on your definite purpose. 

Ive decided to get my real estate license for investing purposes.

Thanks for all the responses.  

These may be unsuccessful flips or homes specifically designed for the purpose.