PAHOO... that looks to be the sight that I currently have on the rear ( well... that I've pulled off now )... the detent ball has been lost so I line it up & tighten good... I don't like that the aperture tightness holds the windage adjustment... so adjusting is not precise... also if I wanted to change sizes, I lose my adjustment...
I only have a blade front sight... the set up worked good enough for me to get 2nd place... I may have to get the detent ball fixed, & save the sight... but thinking more along the lines of the Lyman rear sight & something similar to the same front as you are using, in the correct height for the shorter Lyman sight...