RE: 4th plane to be a GeeBee, what should 3rd be?
There was this cat at the field one day. We were chatting. He asked how long I had been flying. I told him about 27 years now. He had been flying for just a couple. He too was looking for something new and exciting. This was my advise.
If you buy just enough plane to make you happy, then it will last and you will master it. Small steps allow you to always have something to look forward to. Those guys that jump into the hooby and fly a couple of planes and then buy a turbine ,tend to go through hobby , proclaim they have conquuered it and leave in just a few years. Its not a race. Its like saying, " I fell in love, got married, had children and then got divorced". Gee, you are good.
Take your time. That Gee Bee ain't going nowhere. Save something for when you have some experience and really need a challenge. If you wait, you will enjoy it more (later).