Dealing with the Chinese, till we have even our planned requirements fulfilled in Navy and Airforce, we are more than capable enough to hold onto Chinese and beat any advancing threat. Where Chinese actually have a huge advantage, which we still kind of ignore is there inventory of very large number of long range artillery, cruise missiles and SRBM/MRBMs across the Tibet. Compared to thousands of their cruise missiles, we have hundreds of Brahmos , that won't work. We need something like Klub missile and Iskander missile combo in very large numbers across our frontiers against China.
Our biggest advantage against China is American Forces in South Korea and Japan, it's dispute with Taiwan and it's issues in SCS. That ties up pretty much everything front line there only.
Frankly, more than the platforms & the armaments they'd deploy against India , some of which you've described above, there's a school of thought - one of whose biggest proponents is that Trojan horse Pravin Sawhney, who brings in cyber warfare as a major tool China would use to defeat India without a shot being fired.
Now we both are aware that in the field of conventional weapons while China does enjoy a superiority, it's by no means an overwhelming superiority - the kind which can result in annexation of Arunachal Pradesh or even a repeat of 1962.
Yet we both also know, that in the field of cyber warfare we're taking baby steps while the Chinese having been in this field for the past 3 decades & has probably the best cyberforce behind the US.
Let's focus on those areas where we know we're lacking & try to bring them to a level where our forces can certainly deter the Chinese from getting any bright ideas instead of trying to match them bullet for bullet.
I don't accept theories about only the Western Theatre Command ( WTC) being engaged in a conflict with India. If ever such a conflict breaks out, China will deploy it's entire might against India which includes men & material from other theatres too & there's nothing the either US or Japan or Taiwan or any other nation can or will do anything about .
Pls do bear in mind that it's China which claims territories from other nations in the ECS & SCS & not the other way around. It's China which has waged war to prosecute it's claims with it's neighbours & not the other way round. Which in turn means the Chinese don't have to fear their neighbors , even those with whom they share an adversarial relationship. This also means a token force to guard their borders in these areas will suffice .
In the light of the above info & assuming China & India go to war, what makes you think the US is going to open a new front in either the ECS or the SCS?
To conclude, many experts have opined that this decade - 2020-30 is the last window of opportunity for the Chinese to prosecute their claims against India. Our secondary strike ability isn't mature given that we field a small number of SSBN's , the numbers insignificant & accuracy of our SLBMs is suspect. Land based second strike capabilities are too erratic to be considered, not withstanding our modest nuclear arsenal.
Our armed forces at present are bloated, pre occupied with internal security duties, aren't optimally armed, are organised in a WW-2 type organisational set up with equally dated war fighting abilities & strategic mindset.
Change is in the air but for the effects to be seen & felt on the ground, it'd take a good decade if not more.To add to it, most of our critical defensive & offensive equipments are of foreign origin , indigenization of which is an on going process but is also an excruciatingly slow affair.
