Ring Doorball Transformer for Three Hardwired Ring Pros

https://ring.com/products/hardwired-transformer Will this get rid of the hum in my chime and handle the existing hard-wired chime and my one Ring Chime Pro? This is a new installation and a lot is wrong. I'm thinking the existing transformer needs to be upgraded. Will 30VA in the replacement transformer be enough to handle all my devices? My current, 25-year-old transformer is 16V AC at 15VA. (A friend warned me that the gauge of the wire running through the house to the doorbells might be too small to handle the larger transformer. Is that really a concern?)