To me, calling out a
single piece of equipment's year (2004) suggest the others are older. The
price they increase the boat by should be minimal to none. The new
B&G gear does do some neat stuff and is "better," but not necessarily revolutionary (i.e., new and old display
depth, speed through
water,
wind speed and wind direction). You might have trouble getting updated
charts on an old
chartplotter, which might be of some concern to you.
It suppose this is really a personal choice. Are you in the mood to drop 10k on the newest stuff or do you want to spread it out over a few years? If you're just coastal sailing, the old
equipment will get you around just fine. Heck, people have done a lot more than coastal sailing using a lot older stuff. Electronics, including the radar, do have a limited useful life, beyond which they could break at any point and they won't be easily fixed. When this happens, if you're close to home, then it is easily replaced and not really a big deal.
If you're about to venture to far away places, perhaps you should be more inclined to upgrade sooner rather than later. Maybe having the existing
cables will make running the new ones easier (you will be replacing all the
cables, along with the actual equipment). But maybe not.
My closing thoughts: I'd pick the boat that has the better
engine and/or has been better maintained. If they are really equal otherwise and you're not looking to immediately change all the electronics, then get the boat with the old stuff. Learn what you like and slowly upgrade.