2011 PX150 upgrades

Hi guys,

I am planning to get a stock PX150. I intend to release a few ponies from the engine that comes catalytic converter. 

What is the minimal upgrade that I can do to achieve that? I am thinking of installing the road 2 exhaust(to removed the existing cat) as well as the bigger PX2 carb 24/24( i believe this is a straight bolt-on). I do not intend to do anything drastic or use it for top speed/racing. 

Please give me your wonderful inputs.