Your wife is right. You will be very busy repairing the homes if you want to keep that 10K, and you will need to ask yourself how much your time is ultimately worth.
Many of the operators here - including me - started out with owning or rehabbing a single mobile home, either in a Park already, or on it’s own piece of land, to get familiar with the moving parts on the homes and issues with renting them as POH.
While it’s more and more difficult to find Parks with 75%+ TOH, you have to ensure the numbers will work if you convert them from POH to TOH so that the investment is not a time-suck and this is your last park.
If you simply want a 10% return you can get this with some of the MHP funds passively. Search the forum and you can find out details on these.