the thing is that i wouldnt only rely on math in spots like that, as its pretty likely that villain is the only player at the table that knows the correct or lets say close to correct play that short stacked. that includes shove/foldgame and shoving/calling ranges.
so if we would make a slightly +ev shove i'd rather fold and pick a better spot.
and even in those stakes the players know that the shoving ranges from the btn and sb are fairly wide, so they do call light.
thats why I chose a nitty range

Id snapshove K7s and K8