I don't think you need a shank. The faucet screws into the tower and the lines run inside the tower. There are different ways the lines connect, but usually there's a nipple that you hose clamp it to.
Shanks are for going through a board or something. We have this nice piece of redwood that our taps are on. The shank runs through the board, the line connects to the back and the faucet screws to the front. The shank is just a threaded short piece of pipe, really.
If you take a look at the fittings on the tower, it should be pretty straightforward. Good luck! Sounds fun