I was wondering if anyone out there would have some ideas/suggstions for a bike for me. I am a MTB'er (03 S-Works Epic) and would like to get a BMX'er to thrash around my backyard and relive my days as a youth on my Schwinn Predator. I will be making a small track with some jumps and whoops and just having some fun. No need for anything fancy, but I want something that will be sturdy and work well. Are 24" tires a must or are 20" possible? What am I looking for spec-wise to find a frame that will fit me? I will spend between 200-300 bucks and have no problem buying something used. I have some bike mechanic abilities so maybe building one would be an option but I am open to any suggestions any of you have.