Option 1 is for boats with nothing at all and is a GPS based cruise control and would not use the boats existing paddle wheel, or even come with one.
Option 2 upgrades the old Wakeboard Pro, that uses the paddle wheel, to the GPS based system and will no longer need the paddle wheel. The wheel can just be left inplace.
You 09 may not even need the full Stargazer kit, being that Moomba offers is as an option, at least Pro was, and may only need the head unit and receiver. Call Moomba and or PP and ask them what you need.