Mistake number 1: Letting people know what you are planning.
So true. I bought a very expensive Gammill LA set up, computer and all. I used it for about two years and discovered I liked a sit down quilting machine much better. I sold the LA and bought the Juki sit down. I didn't discuss what I did with anyone other then DH. We don't stress over should we or not, if it's in the budget go for it. Relatives and friends asked when they came over Didn't you have a big machine set up here? I said yes but I sold it and got another one I wanted.