To be fair, going in guns blazing is pretty much the modus operandi of nearly every gaming group in existence. Sometimes it should totally work!
Other times, it totally shouldn't.
Much of the skill of being a player is determining the difference between those cases. The remainder of the skill is converting certain failure into success when you get it wrong.
Commentary by memnarch (who has not seen the movie)
Only 1 in 3720? That's considerably better odds than I thought as well. I had thought it was going to be something more like 1 in 999943, if they're going straight at the Peace Moon. It also sounds like nobody, GM included, had really thought through what relativistic ramming could actually do as a weapon, never mind something near lightspeed. Admittedly, there's only the one hyperdrive module, so even if this was mentioned in the movie prior to this point where the players think of the option, it's more of a last-ditch, Hail Mary kind of weapon. Who knows what other assets the First Order has that could be brought to bear even if the Peace Moon is gone. Giant superstructures like this just don't get built from nothing.
I think Sally's pretty much spelled out exactly how things are going to go here. The Resistance will go in guns blazing on the Millennium Falcon, destroy the shield generator for the rest of the fleet to attack, Rey will end up finding a ship of her own in the meantime and escape in it after the shield is offline, then Han will jump the ship into the Peace Moon to destroy it when the battle starts going sideways. Or something along those lines anyway; I'm very curious how Zeppo is going to finally kick the bucket, and I'm hoping it's something spectacular.
C-3PO: This is an awful plan!
C-3PO: The possibility of successfully approaching the Peace Moon at lightspeed, getting inside the shield, deactivating the hyperdrive in the correct microsecond window, and pulling up before you crash is approximately 3,720 to one.
Chewbacca: That’s... a lot better odds than I thought.
C-3PO: If something goes wrong you could just smash through the entire Moon at lightspeed!
BB-8: Wow. That’d probably be some huge explosion.
Caluan Ematt: Mmm. It would, wouldn’t it?
C-3PO: I’m sure Rey can find a ship and escape from the Moon herself.
C-3PO: And we don’t even know how to destroy the Moon! You can’t just go in guns blazing and hope it works.
Caluan Ematt: How to destroy it...?
Chewbacca: You’ve just described Jim’s entire modus operandi.
Zeppo: And there’s two of me!
Allan: We can’t fail!