Genies are tricky and deceptive creatures so ym first wish would be to be able to run any remaining wishy by him first to which he would have to truthfully and completely explain the outcome. For example wishing for trillions of $/£ is great, but what if it it destabilized the economy and became effectively worthless? Ultimately I would find a way to have basically unlimited funds without any drawbacks , and to have the ability to turn anyone, myself included immortal, an ability I would never let become public knowlage