Ive done it
I fitted the Wiburs 30mm lowered shocks front and rear -
There is a thread on here if you search
however to help you very quickly
You dont have to lower the centre stand, but you will give yourself a hernia if you dont .
The geometry / angles change, so the fulcrum / pivot points of the stand relationship change in relation to the wheel
net result, you need to virtually pull the bike onto the original centre stand ....
The side stand needs 30mm removing between the foot and the lower bend, and the foot realigning If not the bike sits virtually upright when on the sidestand, a small push, and its over.
The OEM lowered parts arnt that expensive if i recall
£80 for the lowered side stand, the centre i got with my shocks so cant tell you that cost