The base critical is so poor on this gun that both [Point Strike] and [Critical Delay] result in less DPS than using [Thermite Rounds], [Bladed Rounds], or [Wildfire].
Using Primary Merciless is only slightly better DPS than Primary Crux for Auto, but Primary Crux tanks the alternate fire DPS (64% damage loss).
There is a fun factor to it all though. If spamming 13 alternate fire shots (fully ramped Crux) is more fun than 4 shots before reload, go for it.
Replacing [Thermite Rounds] with a Primed Bane results in a very large DPS boost.