Ya can't get there with a 357 carbine
But, since you already have the 357 carb might as well match it up with a 357 handgun.
If $ were no object a Freedom Arms in med barrel length would be THE SA handgun- they are very fine handguns, albeit not a repro of anything.
For budget purposes- one of the repro SAs. Or even a non-repro of anything Ruger.
If I could have a pair of old West soulmates and could have no other guns they'd be originals: Win 73 carbine and Colt SAA in 38-40 or 44-40