I think we have discussed the issue nearly to death
China will choose whatever appropriate methods to suit her needs at a specific time period.
1. Currently, China is like a student just got his uni admission letter. US is like a post graduate with doctor degree. Some people may have extremely high confidence about china and think China should skip the learning stage and start inventing new things. Well, I agree, occasionally, some year 1 uni students can skip the whole education phase and become the most successful person, like Bill Gates. But, for a country, which path do you want to choose? I thought it's too obvious, but obviously many people think otherwise.
There's a joke (chinese version), a hungry guy rushed to buy meat pies. He bought and ate 3 pies and still felt hungry, so he bought and ate a fourth one. Finally he felt full, but he was really angry: I should've only bought the fourth one! The other 3 are all waste of time and resources.
2. To expect China only follow one model or way to progress is too simple. The whole confusion about China is simply because China is changing rapidly. Yes, China does copy, steal, reverse-engineer things, but if you only look at these stuff then you are ignoring a far bigger picture. For example, in the 90s and early 2000s, almost all western observors only talked about the 2 Sovs and they did not believe China would've produce ANY domestic major surface combatant ships in a foreseable future. It's that kind of ignorance that blind them from seeing China's far more wide spreading indigenous R&D efforts. All those much talked about foreign source stuff, if you put them into the whole projects pictures, are only small percentages (although the very important percentages), and that percentage is getting smaller and smaller. At current stage and in the next couple of decades, I believe China will still try to look at any possible foreign stuff, at the same time keep growing her own R&D stronger and stronger.
BTW, Those new US techs mentioned by Sea Dog, None of them are "nobody else is doing", at least I know China is working on ALL of them. I would be utterly surprised if European countries are not working on them.
3. I suggest everybody to differentiate China's technical catching up efforts from challenging USN's war capabilities.
China is only gathering technical experience and capabilities to reduce the gap to leading navies like USN. It would be insane for anybody for any purpose (either extremely confident or extremely pessmistic about PLAN) to jump from that point to a completely different level: challenging USN's real combat capabilities.