There's written somewhere on King's website, that being eligible for the GEP course (4-yrs) automatically allows you to apply for the 5-yrs course.
So considering that you have a 1.1, you are eligible for both the GEP and standard course... So it's all down to your UKCAT and PS
As for their fundation course (6-yrs), I've been wondering the same, as it initially was my first choice... until I realise that it had been removed...

Had to turn myself toward 5-years and GEP instead...
Hope this helps!
Good luck!