India will not buy METEOR for LCA, because LCA is meant to be a low cost fighter, that's why Russian and Indian weapons are meant for it, with some Israeli alternatives. In the BVR field Astra is meant to be the prime missile for LCA (also for MKI), with R77 and Derby used till Astra is operational.
N-LCA is not a good carrier fighter and when you want to project your power, or even to compete with China, you don't put your least capable fighter on IAC2!
If Rafale will be selected in MMRCA, I think the chances for a combined order of the navy are good, but might depend on political reasons too. I expect the US to provide us catapults only if we buy a US fighter and possibly the E-2D. Migs, Sea Gripens and Sea Typhoons have no chance at all, because they are less capable, not developed yet.