In addition to a tune-up and basic maintenance, as mentioned by others, it should be fairly simple to adjust gearing to meet your change of terrain from Chicago to Alaska.

And very well worth the effort and expense to get such a fine bicycle back on the road.

Good advice above: new freewheel and chain, switch the rear derailleur if necessary, and possibly swap chainrings if desired (or if necessary due to wear)...

I have a stack of older Dura Ace chainrings from this era, 'New Old Stock' (i.e. unused, never installed), that would match the originals on the older DA crank.

I'm not sure what tooth counts I have left (I may or may not have appropriate counts to meet your needs), but feel free to shoot me an email at some point if you were potentially interested in replacing your current rings with a proper match for the crank rather than newer replacement rings (though there are advantages to doing the latter, alternatively): mikemowbz AT hotmail DOT com