Ranger- good to see another P.A. resident on here. I actually live out past Joyce, but work in P.A. (CG Airstation) and have a P.A. address, so I'm in P.A. Are you one of those guys I see running RC cars out on the spit when I'm driving to work? And are you getting that saw from Mike in town? I'm surprised they'd set you up with a 24" for that saw, as it's really too much. I don't think it makes them morons, but I'm guessing you talked to one of the front desk staff, and if you don't get the right one, (ask for Jayme, she's the attractive brunette who knows her stuff) well, you might end up with a 24" bar on a 290. The 290 is a fine saw, no matter what anyone says. The guys who knock it are the ones who compare it to a 440 or even a 361. Compare the 290 to other saws in it's class, like the Husky 455R, and it holds it's own. But that's another thread.
Like has been said above, that saw matches up well with a 16" or 18". If you're looking at the 290, you might look at the 310, as it's the same saw and weight, but with a larger bore, and an extra 1/4 hp, which makes the 13 lbs it weighs a little more worthwhile, and this would be the saw's main shortcoming, is it's lack of hp to it's weight. The 290 is a good firewood saw, and I don't know how large of diameter wood you're cutting for, but remember that you can still tackle diameters upwards of 32" with a 16" bar. I think you'd be disappointed with the 24" bar, as that bar wouldn't do that saw justice, and you'd think you had a piece of junk in your hands. We do have soft wood out here, fir, WRC, spruce, etc, and alot of folks think we run bars too long for our saws, but the 24" is too long for that saw, even by PNW standards. Like Ralph said, the 20" will work, but the 18" will work better. Ask them to swap out to the 18", and you'll be much happier with it.
Also, search this site for muffler mods for the 290, as supposedly the saw responds really, really well to them.
And I don't want to take business away from our local shop, but there's a 440 Mag in the pawn shop downtown, next to Mambasa, for $350. No decomp valve on it, but I ran it out back, and it starts, idles, accelerates and runs good. 28" bar on it. Good saw if you're looking for something bigger in your price range.
Jeff