@ekohn00
SCS4 uses the same tweeter as the 2.7’s and would be a great match.
MCS1 would be another option to look at. MCS1 is quite large and has two woofers single midrange and tweeter. I think this one would make more of a notable change for your setup.
I own both and between the two I feel the MCS1 provides a larger soundstage for the center channel in my setup.