Re. MV Motorrad peg lowering kit: on the 2016 RS I adjusted the brake lever using the standard mechanism. I added a gear lever extension to give a bigger target for my boot as I was catching the tip only.
Similar to this
https://www.ebay.co.uk/itm/143963583188 but can't find the UK seller
I adjusted the rear brake pedal as much as I could but it is not perfect as there is not enough range. There again, with linked brakes, you do not use much back brake. It's a little high so you have to lift your foot rather than just dabbing down. It's fine for holding the bike when parked and when needing extra effort in an emergency. It's not ideal if you were using the rear brake all of the time.