Welcome.
Bit of advice. Don't be tempted by all those wonderful mods. I was. I haven't finished a career, let alone a patrol yet. That's after years of trying one wonderful mod after another. You have to start over again with a new mod.
At one time I had eight careers going, in SH3, and SH4, and SH5. Didn't finish anything. I still have five going on my new machine. I started over again with the new computer last year.
Stick with it and see what comes about!