Your three choices are excellent ones. But for your first plane I would recommend The Goldberg Eaglet 50. I had one some years back and it is a great first plane. It is a kit and you have to build everything, so are the other two. The Sig kit has a lot of parts to it. Making it more of a builders kit. It shouldn't pose a problem for a beginner because the instruction are great, But I think the Eaglet 50 would be easier. The other Goldberg kit is also nice, but I think it is a little small. Whichever one you choose go slow, read the directions and have FUN building it.
Best Regards
Nevin M. Levy
(G17Staggerwing)