Congrats on getting your first 'toon. As a suggestion though, you might give some thought to upgrading the tubes on the new boat with bladderless, 2-chamber tubes such as those available from Maxxon. Besides being made of MUCH tougher material, they also have skid strips on the bottom to better withstand submerged rocks and gravel as well as double air chambers to provide additional security while on the water. I'm not sure whether Outcast offers bladderless tubes as an option on their boats, so unless you're dead-set on a Fishcat, you might also take a look at a similar Scadden boat where bladderless tubes are available.
FYI, there's a used Scadden McKenzie Drifter with bladderless tubes available right now on the Classifieds at http://www.washingtonflyfishing.com/board/showthread.php/66334-Scadden-Mckenzie-X2