I sure hope it turns out to be as sweet as you hope. The 225 is a KILLER boat - It can do so much more than most designs. I accept that it doesn't fish quite as well as a c.c. but it fishes pretty damn well, and it provides alot of comfort and storage that are not available on other boats. (Can you tell that we LOVE ours?)
Tashmoo has given you good advice for checking the boat out. If you decide to go for it, I would just add that a canvas mooring cover is terrific if it stays outside. Sounds like it might live in your garage which would be even better. We added a Garmin 4210 which just barely fit into the electronics box. We have been VERY pleased with it, although the Garmin touch screens are even better. I have seen some people comment that they would prefer to flush mount the chartplotter and not have the electronics box, but honestly it has been nice that the unit is always out of the weather, and I use the box for alot of other delicate stuff - ipod connection, sunglasses, etc. Only issue is that sometimes going fast through chop the smoke glass upper window panel will fall down over the face of the chartplotter....not such a big deal - you just put it back up.
I believe the bracket adds about 2'on its own - not sure how much with the motor also included, but the other posts are probably correct. Ours is at the marina now all wrapped up, or I would measure for you.
On the down side, if you keep her on a mooring, you will probably wish they had designed the scuppers about an inch higher. So far no problem, but I do consider this a fly in the ointment.
Let me know if you would like any other ranting and raving about the 225. Ours is a well-loved part of the family. Best of luck to you and yours...
Mike
(PS - I have been looking at every other dual console for several years now - both before and after we bought ours. The Grady 225 design Kicks #$% and takes names. I.M.H.O. there is nothing out there that touches it.)