Alright I approved your sheet to view it easier. However, there are some things I want to discuss.
So, your background and items. My setting is not as advanced as the game rules have it be. There will not be "star maps" and scales like that. However, I can change it to be a bit smaller, yet still a Navigator.
You could be a ship pilot of sorts that have experience riding on/driving the space ships for delivery of resources and stuff between colonising worlds. Do you want your region of work to only be in the local star system? Or do you want to have the experience of having gone to the other star systems? If you choose the latter, you will have some other interesting knowledge that you may or may not want to keep secret.
---
Another thing, could you list out the order of items you have? Because there is a rule for this game that the closest to number 1 slot it is, the easier to quickly retrieve it from inventory.
Btw, I consider O2 cannisters to take up individual slots