I used a 73 and a 140 micron. That was mainly because I wasn't sure what would work best for the strains I had. I would get at least those sizes but a set really isn't that much more. Mine are cheapies from Amazon, and I made sure to rinse and dry them well before first use because I didn't want any leftover plastic in my hash lol
Just looked back on my post, looks like most of it was between the 73 and 140 and it looks like it was actually around -12C (9F) outside.