2M is not critical but you will have to be more specific with other changes.
As for the Boost every persons rig is going to sound completely different so you will have to test and see first. Such a simple concept of order and gain mapping your pedal board makes a world of difference as well.
My opinion is to place a more transparent Booster like the Stage 3 (currently on limited special w/ Free J113) and use it after the Sabotage so you do not blow out the input on the Sabotage since it is already using a booster in the first stage. All you will end up doing is creating more noise IMHO. By placing a quality clean boost like the Stage 3 after the circuit you will then enhance the circuit being fed to it.
Here are a few videos to help: