QUOTE
dont discourage them from building it - - it can be done in a weekend, and things can be bought as you go along to get the money - it will take time, but you can build it in stages
Huh!?...It can be done in a weekend...it will take time...you can build it in stages?
Dude, ya gotta make up your mind.
I know of very few people here who was able to 1) buy all of their components, 2) design their PJ, 3) build their PJ, and 4) tweak their PJ in a weakend. Some of these PLOGs go on for months. Heck, my PJ is approximately 2 or 3 months in the making if you start the clock when I paid for access to the forums. I bet ya I spent hundreds of hours reading, planning, and working on this.
This is not a trivial project to get into. And it is not a trivial amount of money to invest. Don't get me wrong, it is fun and worth the money and time. But that does mean you need both money and time. If you are short on one or the other, the chances of completing the project drop dramatically. If you are short on both, I would seriously advise against starting the project.