Hello @thelastspark
Well first off, a 100TB is way too big, it will never fill up. For the moment, it is not worth going above 20~30TB which already takes years to fill up at these days rate.
Have a look at:
I believe so, but it would be a negligible bandwidth. So it wouldn’t harm vetted node’s revenue much. (Doesn’t seem exact - see @kevink’s answer below)
I think it’s a good idea to have a spare 550GB node on the side so it is vetted and ready when time ti expand storage comes (or to replace a failing node), as long as you don’t put much money on it.