if you are mechanical in anyway you can do what you want to, or have a mind to do, its not alway easy, and sometime takes some serching or asking on these sites , but you can GET ER DONE, THESE GUYS HAVE DONE ALL OF IT, SO EITHER DO A SERCH, or ask, youll get some help,
and as far as the kids, I use to rebuild motorcycles when I was younger, when they were with me I just moved the playpin out in the back yard or garage, depending where I was working, then later I would just give them something to do or let them play, of coarse it took a little longer to do something, but they were with me, just cant get flustered when you have too stop something and play with the little one instead of get your project done that day, kids are more important, now for me its the grand kids, its always put kids first, of coarse the project will take longer, but its just a project