If you set the infill to 5% or less for each part, it will take less than 1kg to print (about 888 grams in my calculations)
CALIBRATE YOUR PRINTER:
Before printing, it is vital that you have your printer calibrated. My printer wasn't when I printed a first tower, and it was a big hassle to sand the inside and outside of the tower. I calibrated my printer using the following videos and after, my second tower came out with absolutely no sanding needed.
Extrusion Rate Calibration Video:
Retraction Rate Calibration Video:
TIP THE DESIGNER
If you only give once a month, please think of me next time. :)