All of the tanks I own for the 2300 will only allow for 4 rolls of 220 or 8 rolls of 120.
If you are using an extender? then maybe more rolls of 220 are possible.
I have been doing 1 shot on the 2300 for many years and I always use 1000ml of chems. Film is consistantly good , I would be cautious with an extra roll of 220 .