As an airline pilot there is only one thing that really concerns me. A FIRE! everything else can be managed and controlled.
This is an absolute no brainer.
1. Land
2. Stop as fast as safely possible
3. Evacuate on the runway
No, if's or buts.
There is a fire and it is confirmed. GET OFF THE AEROPLANE!! Don't taxi. Don't prolong anything. You just never know whats about to happen and thats the problem.