Hi Aidan: Before I forget, welcome to "The Zone's General Arranger Forum." Nice choice considering economics, quality of most Arranger Keyboards, etc. I think you will enjoy it. You can always switch to something else after learning the ropes on this excellent machine.
I am neither, a performer nor a musician. Songwriting is my source of entertainment these days and I use a Yamaha PSR-S910 to create demos of my catalog. (Some would laugh uncontrollably at that statement... but hey, you only get one chance!)
My best, free advice... is to pay attention to Don Mason in particular, plus all the other experienced performing Arranger Players who earn a pretty good living doing gigs at all manner of venues.
As an interested observer, I have noticed a fairly massive move in Korg's direction among many of the guys and gals here. Because economics plays such a big role in my retirement, it will take a warp-speed leap for me to change "boards" unless I discover something that will lend itself to enhance my desire to move my songs up the invisible ladder to success.
Here's hoping you have found a community of like-minded and always helpful folks and will eventually share your success and wisdom as we move along this interesting pathway.
Best regards, ----Dave Rice