Since every state, city, and county can treat property taxes and re-assessments differently, having someone that is familiar with the market and who has fought for other owners in the past is extremely beneficial.

Spend some time - find some mentors - buy a few coffees and get really comfortable that you know all of the hidden dangers to the investment you want to make and then, pull the trigger.  

I had an extremely horrific experience with a condo I owned that was managed by CAMCO management (google to see my review) and therefore, steer clear of any complexes managed by them or anyone affiliated (I recently heard the owner of CAMCO passed away and his daughter opened a new company.)

I haven't pulled the trigger on my first deal yet.

That being said the city is extremely block by block, so you have to make sure you're on a good one.

You also cannot do a Cashout Refinance in Texas through FHA, which would allow a singlewide.You may be able to accomplish the majority of what you're looking to do through a Construction loan (pay off land loan, fence, generator, well house, potentially even some renovations to the mobile homes if listed as Accessory Dwelling Units), but you mentioned not being ready to make the move on new construction on the property yet.It may also work as an FHA 203k Renovation loan, but these can be extremely cumbersome and expensive to close.

Yes I am actually seeing properties and putting offers, however , have found it extremely rare to come across with a 10% ROI in my calculations .

While this might work out for you, I would consider it the more extreme and risky approach. 

The exception to this are stoves/ovens that can extremely greasy and dirty if not taken care of, which will cause problems with igniters, and gas valves.

I'm extremely excited to learn as much as possible from the community and I just wanted formally introduce myself.