I would rather have more 052D than 055A, perhaps the composition 2:1.
I think a 2:1 or even 3:1 DDG to CG ratio would be healthy.
052D is extremely capable DDG, at least would be as capable as the British Type 45.
Lol do you really want to start a comparison thread, because I'd love to tell you why comparing Type 45 and 052D is a bad idea.
055A is useful for CBG and not really more useful than 052D even in the second island chain. PLAN is not USN and I believe China don't want to be the world policeman.
I'd say 12 055A (for 4 CBGs) and 24 052D, 6 052C+ and 48 054A/B and 75 056A/B ... should be achieved in 2025
Remember China has limited defence budget.
China should increase its defence spending to 2.5% GDP which would be (2013) ~$200B
I'm not going to speculate on how many ships the PLAN will or won't build, but I do want to remind folks that most most nation's CVBGs do not have more than a couple of destroyers and frigates... and many of them only include one or two aegis style wide area defence style ships.
France comes close, with their horizon/FREMM, but even then they field a small number. Countries like India, even until now can only muster up the delhi class DDG as their most powerful surface combatant and a few shtil equipped frigates to escort viraat.
PLAN, with it's 6 052C + multiple 052Ds, and upcoming 055s (the latter two types being built in who knows what kind of number), are definitely not playing a little boy's CVBG game and are leaping directly ahead to a force that can challenge the USN. In fact, outside of the USN, only Russia operates anything near a credible cruiser force and even then a couple of cold war era slavas aren't a very serious threat.