RE: Building with magnets
I built a magnet system as shown on Caffeenman's Airfield models site, and RCKen's LT-40 thread. Between both sites, I learned pretty much how to use them. Those two places are like a really good instruction book. It takes a while to read through it all, but it is worth it. But I'm sure that I will develop other ways as I apply it more.
I haven't been in the modeling world for years, but I did quite a bit when I was younger, all with pins and a door. I'm on my first model building with the magnetic system, and all I have to say is WOW!!. I'm like them much better, and I'll never do pins only again.
Once you do try it, you may want a larger table. Just do a search on RCU and look at the sites above for ideas that may suit you.
Bion