Thanks to all for the advice so far. Yes, from what I have read around here so far, this is the most realistic and nonjudgmental group of folks.

As for waiting on upgrades, considering my last bikes were a Huffy Thunder Road and a Sears Free Spirit 10-speed (both circa 1979-80), EVERYTHING on this bike is ALREADY an upgrade!! Fortunately, I'm a frugal person when it comes to mechanical things, and I have a tendency to upgrade only when the current component has failed beyond reasonably affordable repair. As for the miles computer, for now (early training) I've already identified a good 2.5 mile loop in my subdivision to get started. One long hill; a couple of short ones, but mostly flat riding; don't want to get myself burned out too soon on the hills. Plus, I'm not gonna go whole hog spending money on this right away; would rather "treat" myself with bike goodies along the way.

Oh, and the wife loves the helmet - says it reminds her of "Speedy Alka-Seltzer"!!