Hey Rich,
You got here then!
At the end of the day MK will use a variety of strings for his guitars. I would experiment and see what is best for you..
I as you know have 3 MK Strats but they are set up differently...
1) 9's with floating Tremelo (Early one)
2) 10's with Fixed Tremelo
3) 10's with Floating Tremelo (latest one)
I play a lot of MK along with Shadows/Marvin material so the three give me plenty of variety.
Try some 10's and see how you go... What music do you play?