The more physical sliders and knobs, the stronger the board has to be made, which means the heavier it becomes, so unless you can find a cheap way to make boards out of Carbon Composites or Titanium, (Add about 5 times the cost of a typical Tyros 2 if you want your board made from those materials) then there is no way that the board you require could be made light enough for your 30 lb weight requirement

Bill