I say don't forget the starting gear for your character. Don't forget basic things like a personal comm unit or a hygiene kit to be able to take care of personal hygiene like clipping nails, brushing teeth and so on the character needs to go and pay for those things and has a problem when not being able to visit a barber or whatever suits the needs of that character to not be scruffy.
I assume one armour, one weapon and stuff like kits for disabling traps if that characters wants to do that and clothes is a no-brainer.
Every character should be able to fill a different role for starship combat or the party as a whole should be able to fill at least the most important roles.
Keep in mind you don't only have magic but also technology and lots of different species and cultures.
If you want to explore new worlds the characters have to be self-sufficient or hire expensive experts to be able to survive the untouched or nearly untouched jungle on planet 754834.
Radiation is a thing in Starfinder! So let one person check for it and be prepared to treat people being exposed to radiation.
Keep in mind for later.
Characters are not limited to natural ability scrores and increases, they can use augmentations!
Dib into cyberpunk genre and get yourself cool stuff like a biotech augmentation to breath acid like a tiny dragon or classic cybernetic arms.