First off welcome to the forum!
Well if you think it's beyond your abilities right now, I would keep turning them down. Plus the thing with mobile homes, most are going to contain some type of hazardous materials and that is a whole 'nother ballgame that you don't want to get involved with.
If it were me and making money doing the things your doing now, there is no reason to jump into something that is beyond you right now. Give it a little bit and write up a plan and then work towards it.
James
PS: Love the name of your company!