How do i get a Fast Break?

I have completed the game on hard but missed a lot of the Mastery achievements so I am trying to get them now.

But the Fast Break achievement is giving me a bit of trouble, so I could use some pointers on what unit/Kerrigan upgrades to take and any tips for making the trip around the ship a fast one.

I have managed to do it in 10:39, so I am pretty close to getting it I think.

I focus on using Kerrigan's ability, turning Zerglings in to Banelings and taking over big units with Infestors.

I use the following set up for Units and Kerrigan: