Also consider how you will empty the bin. My council are unimpressed if I leave them a bin full of sawdust to collect and won't take it either as compostable waste or domestic waste.
A 120L wheely bin is great to move around but not at all easy to decant into anything else for disposal.
My cyclone delivers into a steel drum of about 60 litres which does fill up quickly* when the thicknesser gets busy but it can be emptied into sacks easily for collection by local chicken and horsey types.
* I'm currently experimenting with a sensor and sounder to tell me when the bin is full which if not attended to, fills up the cyclone and the shavings are sucked up into the roof mounted filter which is a right royal PITA to sort out.
The system is fitted but just need to do some woodwork to test it out.