I would advise, depending on your finances... don't cheap out too much on the half chaps and paddock boots, or you'll end up hating them and wanting to replace them sooner rather than later. Opt for a brand like Ariat if you can find their men's products, as a starting point, because their products are more than sufficient quality without breaking the bank.
When I started riding again five years ago, I went with the cheap store brand paddock boots and half chaps from Greenhawk, and the paddock boots had plastic soles that would slide around all over the stirrup irons, and the half chaps had no grip and would slip down, and my leg would swing. As soon as I upgraded my equipment, there was a HUGE difference to my riding!!