Best Of

When you upgrade the XO upgrade to the TL XO and buy 8 RD0-198 tweeters. IF you plan on that just buy the tweeters now, call Polk CS mention you're a member here and get a small discount on the 8 or 10, never hurts to have a spare or two.
I think I have 6 spares

^^^this^^^ and get well soon. No doubt about it you have 1.2's because Polk never made a first generation SRS with a pin blade interconnect socket. You have the only pair that I have seen where Polk wired them correctly from the factory even though the label is a blade blade sticker for the first generation SRS.

Fact, as they are now SDA SRS 1.2 speakers that are wired correctly, if I purchase a "dreadnought" or appropriate interconnect cable, I should be able to run monoblock amplifiers without damaging my speakers or amplifier, correct?

YES ! You should build a dreadnought whether or not you decide to use a non-common ground or monobloc. The dreadnought works on common ground stuff too, mo'better.
Polk was very well known to use old stickers on speakers when they moved on to new models, they were "thrifty" in that way.

Everything is wired correctly so no need to change anything.