As I said before, I’m also a smaller driver and have loved the OTK kart and have had no issues getting it to work and transfer properly. Some karts I’ve felt were too stiff for me, but this kart is flexible and works, even with my size.
Any of OTK’s 30mm karts will be good for you. Whether it’s Tony Kart’s Racer 401, Kosmic’s Mercury, FA’s Victory, or Exprit’s Noesis. All the same kart, just in different colors.
OTK isn’t the only kart that will work for you, there’s lots of options. I’m just relaying my experience as a smaller driver, finding the product to be very good for me. If you have other options you can get support/parts for in your area, then you should also check those out.