well, your crank will be a limitation due to oil pump most likely...what oil pump do you have and is it worked over? bearing clearances?
also wonder how much side loading the block is going to see at 9k...being no sleeves or supports for the side of the cylinder walls.
Just to let you know fred, initially I'm spinning mine to 9200...then inching upwards to 10k to find the limit of the 12mm on my build.
Then I'm going drysump