Well, that will do it.
And this is the icing and cherries on top. Definitely C3 all the way down to the S2. Anything and everything goes here.
Suggestion, and a few of us agreed, when pumping level your body out. No sitting. If even possible lay on your stomach. Weird way to pump, but it can actually be done. Oh, plenty of methods to lay on your stomach while pumping. It's a little freaky but S&M world mastered this kind of kinky approach.
If you don't want to lay on your stomach, lay on your side, on a flat bed. No incline. Reduce all pressure off the spinal cord.
If you have a luxury approach, where there is a spa, massive tub, or a pool to float in, you are one golden child for PE in weightlessness.