OK so my group doesnt have a navigator, astropath or void master so besides combat, transit through space is pretty much skimmed by. I've been trying to modify the example meta endeavor in into the storm to be playable, and I've never really know how to properly map out warp routes between stars. is this even important, or anything more than flying between the two and calling it good?

We use the second one. Between two stars, avoid the warp storm. We also don't have a navigator (just in NPC) my Rt plyer use the AutoNav software.

I've ruled in my campaign that to properly map a star route, the ship has to travel forward and back at least twice - to check for dangers, and double check to see how stable it is.

Further trips after that make the route more and more familiar, as the modifiers indicate.