In the past I have determined the basis by pulling 5-6 comps within a 2 mile radius and documenting my 'math' that arrived at that basis (similar to an appraiser's table.  

Pay for a Prelim Title Report - - this is what the bank and title company would be looking at.If a few hundred dollars keeps you dry on the docks, it's better than falling into the water filled with sharks.

In Lufkin a dealer has this ad up for a New MH for $40K , delivered (but not set up)http://nacogdoches.craigslist.org/reb/5405774303.h...In my area a new Single Wide set up is running over $50K.If the Mobile's are less than 10 years old, you might not have that many problems.  8-12 years are when Water Heaters start to fail, and MH Water Heaters can cost more than regular ones.  

I would also look at the skill level you both bring to the table.

I am here to pay it forward so reach out if there is some info or maybe connections you may be looking for that may move you along faster.My first property I bought was 10 acres with power and no water, bought it for 30k sold it for 50k, I was hooked after that, just kept repeating the process. had a good mentor at the beginning.Good luck here hope to see you around!

In 18yrs, I've NEVER had an issue with elect, gas or water meters!!!

Some of that sounds more like ventilation and water issues (fungus) than foundation issues.

This also assumes the Park is on city water and sewer and not well and septic...As far as the stick home goes you should seek to purchase the property without it, but if you have to acquire it then yes using comps is the correct approach.  

also the old furnace is so old it dont have some thing to mix the hot water like when you turn on the hot water it gets scalding hot this house don't even have circut breakers it runs off fuses

"Systems and team" are really table stakes.