VLSRSAM is not ready , neither LSP ready nor even in final dev stages much like kusha itself, they are still doing revisions and things. So there is no scope of it being considered as part of systems for any existing or near future project ships. It is the same reason navy gives for opting for MRSAM that is imported mainly, that the existing under construction ships will have the proven existing barak mrsam installed rather than domestic produced MRSAM, which will go into next class of future ships. Either way, protection of asset plays large in navy's mind, esp for the first IAC. Until we are privy to absolute knowledge forwhich system offer what, and what role each ship plays, it is unlikely we can predict what SAM system would go on what ship.
I think it is likely that when a new class of ship will be designed, the designers would consider kusha or VL-SRSAM for frozen design config only if the said systems are fully ready & in place.