Kiwi Farms

Yeah the question is pretty simple. Finally reading the Dark Tower now that I'm out of the joint that I have time for read for myself, and I'm about to finish Wizard and Glass. For the record, by far the best one in the series so far.

Next step is, what the fuck do I do next. Do I get WTTKH which is chronologically the next book but apparently more or less a stand alone, or should I go through the whole series and then read WTTKH afterwards.

I have no idea what WTTKH is about for the record, or what happens in WOTC or the rest of the Towers series so don't be a cunt and use spoiler tags and shit.