Thank you fellas, we bought for the kiddos as they haven't been able to go to a public park in 6 months. They are really enjoying it and that's the best reward. Hah, they sleep pretty well too. Makes the sweat equity my wife and I put into it worth it for sure.
This particular set came as a kit and for the sale price we paid ($1299), before covid19 made anything for home outdoors gold bullion, you'd be hard pressed to beat what it offers. This set is now $1699 I think? I would have loved to build something custom but the cost would likely be similar (though materials might be slightly better?) and would have taken a week or two to build.
Best of luck with your build Bdc101.
Purple, if your son is into space science/robotics/engineering, I'm sure he watches Mark Rober on YouTube. If not, definitely check it out. Watch his vids with my kids and wife and most of his videos keep everyone's attention. He's an ex-Nasa engineer. Wish I was half as intelligent. LOL then again, I frequently find myself wishing I was half as intelligent as some of my fellow forum members.