From gathering information and facts regarding departments, staff, and gaminglight. If you have over 10 warns then it's an issue. My statement because you cannot join a lot of departments/staff having over 10-15 warnings. So that prevents you from many opportunities within PoliceRP. Also just by generally observation staff will warn your more if you do continue to break rules having over 10 warnings.
I would say you are just fine regarding warn count, but just be careful when roleplaying!