6 Month Beard / Best Lengths Tips for Full Beards and Stubble

I grew a beard for 6 month during the colder months here in Australia. Should i keep this length? grow longer or go back to shorter beard or even stubble? I also give some tips on different lengths.
I might trim beard back to 20mm or 10mm and possibly back to stubble during the hot Aussie summer.

[@Medomsley]

Missed you and the beard Rob, it's looking very luxuriant! It looks great long, all that's needed now is a handlebar moustache. Work I know, but would look great with the big beard.