carb kit 30mm

Thinking of putting one of these on my p200, Art no j40111000.what difference can I expect compared with my standard 24mm dellorto carb.My set up consists of malossi 210 kit with matched transfers and taffspeed pipe.
Do these kits come with every thing included such as gaskets and jets etc.If not what jets would I need for my set up.?
Should I go for 28mm or30mm KiT?

Regards Colin