Hi Mike/Chrystal!
How exciting! The 255 is a great boat, you're going to love it. While my Surveyor was tapping around the hulls and talking about running to the Bahamas with the right weather window, he said, 'this boat's going to be around a lot longer than you two.' We took that as a compliment. My 2010 was the first (only?) 255 built by Triton and rigged/sold (I believe) by the good folks at Mobile East Marine to the PO. To date I haven't seen a post- 2010 255 owner posting here, not that there couldn't be some.
Just a couple of things you might consider with your most excellent dealer...
1. Current engines can output data to a NMEA2K network, including your plotter/MFD as well as your brand-specific engine instruments. My Yamahas were not rigged to do that, and now the rigging tube is so chock full of stuff it would cost a fortune to de-rig to run the simple 4-pin connector through there. (It's still plugged and resting safely under the cowling). The engine networking itself is otherwise plug & play pretty simple. Once it's done, it's done.
2. Marc Grove at Weifings has sold a lot of 255's and hung the Counter-rotating (left hand rotation) engine on the 'opposite' to conventional side for more speed (you can search the site re this). My CR engine was hung on the conventional (to port) side. You may want to get your dealer's input/thinking on this issue because once it's done, it's done. (Some say you can just swap out the CR gearbox, others say nay).
3. (OK, more than 'a couple')...the boat will never be lighter/faster than at sea trial. When properly trimmed for your typical load and cruise the engine lower unit antiventilation plate should be at water surface/splashed, but not underwater. (You can search the site re this). With full gas tanks (900# right there) and all the 'stuff' boats collect you'll never again be riding as high, so be sure the engine is not mounted a hole too low...you won't be changing that under a shade tree in the back yard, like some Brats with lighter engines. Dealers prefer it be a hole too low than a hole high since a boat will be more forgiving of turning 'blow outs' and other operator errors...but dealers aren't paying your gas bills.
Everything below can be easily changed later, if needed. Well, maybe not 'easily' but to paraphrase Rogerbum, easily 'if you invest enough time and work and/or enough money.'
4. You need a boarding railing on the engine bracket to transom. Mine is the only 255 I've ever seen on C-Brats without one.
5. Access ports for the fuel fill and fuel tank connections are not 'pretty', but a good idea in the long run.
6. It seems every other 255 owner is a Permatrim fan (Thataway, maybe not so much). Since it's mounted ABOVE AV plate, which should be ABOVE the water, I don't see it functioning at cruise. Trying to force my boat into the slowest planing speeds takes way too much throttle/RPM attention that detracts from overall situational awareness. Also has the engine cowlings partially awash, and saves no significant amount of gas. At 25 MPH the boat and the skipper will both be happier and have more air cushion in the tunnel. Also, it may be a sin to drill holes in a new 2015 engine...check with your local engine cleric before you do. And pray.
7. I'm still experimenting with props, but prefer a four-blade (as did Thataway, with extra cup). Now on Solas 13.75x17p 4 blade aluminum, WOT 6K RPM @ 35+ MPH in Heavy Cruise Mode with Bimini and non-pristine bottom paint. Get your dealers expert opinion. I have 2 17p 3 blade aluminum original props, scanned and trued/reports and painted by Accu-Prop Pensacola, RH + LH, 2 for $120 ($60 each) + shipping, anyone PM me if interested before I put them on Ebay.
8. Since you are buying new, don't be penny-wise and pound-foolish. Pro-rate the costs over the time period you plan to own (10? 20? 30 years?). A 2015 boat will be worth way more than a 2006 model 10 years from now. The PO was not a trailer boater and his 2006 EZ Loader cost me $4500 (and him $1200) in upgrades/tires. I should have bought a new Float-On for $9500 and be done with it. Lessons Learned the Hard way.
Cheers, and best wishes on your purchase! PM me if there are any questions I can help with or for phone # .
John