[Mount RP-140SAs on wall or set on front speakers? Opinions, please]

hey guys hope all is well . I got a question I just bought klipsch rp 140 sa . my ceiling hieght is 7 ft but flat would I be better off mounting at cieling for front  hieghts or use them as the Dolby atmos enabled speaker they were designed to do. if I use a Dolby enable and place on top fronts I only have about 18 inch of clearence to reflect . thanks in advance for any replies

[Anyone using RP-500SA as heights channel ?]

first time long time. Hi guys how's it going during this crazy time hopefully you guys are well. I have pioneer elite vsx 303 with klipsch rc 52 ii and rb 51 ii bookshelves and then 4 rear klipsch satellite with klipsch 8in sub. My question is I'm buying either kliosch rp 140 sa or 500 sa but was curious where my fronts are 10ft apart could I mount the 500 sa say above my tv or corner of tv instead of above my bookshelves.  my theory is that I'd get more separation instead of just a taller sound stage  by doing so any thoughts??? or just use as dolby enabled ??