For a little under your budget, you could try this: http://www.hlj.com/product/BAN929453
If you're still new, HG 1/144 are probably the best way to go. Master Grades are good if you like a design, but a bit heavy to tackle early on. A High Grade from the last decade or so is a nice easy challenge- there's some work to be done but nothing too daunting, plus it won't take up much room when finished.