If the Chapayev got the guns its meant to have at lvl 29... it would out-gun an Edinburgh 6 lvls too early =P
Well the question was answered but just to go off a bit more...
Ivan, yes I agree, I plan to use Chapayev until Rurik, or maybe all the way to Kirov. I got all my crew lvl 36 with 60 vets 200 experts on gunners. Let me tell u the thing is an absolute beast!
Unless u plan to AA or TW, or just for the sake of something a little different, I don't see the point in any Soviet CLs.
The only downside is Chapayev is a huge ship (big target, actually bigger than Kirov) and has low DP.