Nice 5's BTW, I've just got my 3's FS & BS feeling really solid and this week I'm looking to move up to 5's... doubt I will be corking anything ever haha.
You'd be surprised. A cork 5 is a pretty easy/natural rotation to spin. Some people say it's easier than 3s. I've done some practice attempts in to foam pits/on tramps with no board and it is a pretty fluid rotation that made me think "Wow, this is really a within reason trick for me to do". Lock those 3's first, and I think cork 5s will flow pretty naturally.