if i was to do it again under the same circumstances, i would start with rear springs and struts, see what happens.
i think the moog p/n you have is wrong, should be CC273 - but double check. rockauto.com has them for $78/pair.
I used monroe sensa-track struts, they seem to be good quality, but a little stiffer than i expected. also from rock, monroe or kyb, $61 each.
check the shock boots before you start, i replaced mine, but reused the mounts.
i kept the original springs in the front, they were ok.
theoretically, the springs should last almost forever, save for rust, if properly engineered. i suspect that they were under designed and over stressed.
if your ride improves to your satisfaction, you can leave the front struts and springs alone until they become a problem. unless, of course, you've got the cash and want to mess with it.