Well on a second thought building a clone of IAC-1 with bigger lifts might be far more cost effective for IN than procuring 4 LHDs. IAC-1 & its clone can double up as LHDs if needed. IN should go for 4 LPDs instead, of around 10k weight class which frees up money for cash starved submarine arm.
Not only LHDs built in india would lag behind indigenization percentage of IAC-1 clone. But also building follow on IAC-1 clone would help standardization of indigenous systems/parts across IAC-1 and vikky (because its not economically logical to develop systems/parts for a single ship, but if you have three or more its makes a lot of sense).
Indian Navy have to be innovatively PRUDENT if(more precisely when) they have to take on ccp's navy.