Jannik,
Go for the FI!! no doubt its the best solution..
Youll find a job on King Airs or other A/Cs with work connections..and if the business doesnt pick up in the future youll always find a job instructing to keep flying and current.
If you go for the king air,you may not be able to continue to fly it as others who paid like you may take your seat and youll be out of a job..
The king air may seem the easier way but wont pay out if everthing goes to hell.
Good luck,
M.85