Since you mention the kickstarter, I assume you mean "mild rearsets", with pegs further back than stock. I have been working on this myself (slowly....) There will be clearance issues with the kickstarter, requiring a folding RH footpeg or a modified kickstarter. Depending on your brake pedal design, the stock kickstarter may also hit the brake pedal.
On a drum brake bike, you will most likely also run into issues if trying to use a linkage between brake pedal and the stock brake shaft (pivot) I once saw a homemade setup where the owner had welded a new pivot bushing further back, eliminating the need for any extra brake linkage. With a rear disc brake, you could use a modern, compact master cylinder activated directly by the brake pedal, also eliminating the need for any linkage.
On the LH side, there should be no problem using a linkage for the gear pedal. Good luck!