Should I wait till a future update (Miyabi W-Engine problem)

Hey all,

I haven't played ZZZ in months but was lucky enough to pull Miyabi for free with good luck. However when I looked online for an alternative W-Engine I found many threads on Reddit saying she doesn't have a good alternative W Engine. That basically you are screwed if you don't get her signature weapon.

I also looked it up and i don't have any of the alternatives that sites have listed because I haven't been playing the game. So my question is, is it better to just wait for a future update when they add a new f2p engine that works with her more? Or is it doable to play with her for now with an alternative engine?

I need 70 pullls to get an S engine and obviously it's not guaranteed. Since I'm so far behind in the story I wonder if I could earn enough free pulls just going through the older content?