Talking about the seat height, I am 5'9", and the stock seat is high for me. I am not going to touch it though, it's original! But you can source a seat base from Germany, then they sell the aftermarket foam and cover on eBay. I'd get that, shave some foam and cover it. The original seat can go on the shelf for shows
In my case, I found original seat in a bad shape. Repaired the base and shaved the foam. Next will be stretching the aftermarket cover from eBay.
1982 Kawasaki KZ1300 A4
Building an engine from random parts. This will eventually morph into building a bike from random parts - if it ever happens. Need a frame to begin with.
I have a complete seat coming from Bob-The-Seat. New fiberglass pan, foam, cover, belt, buckles & rubber. Assembled and ready to install. Not cheap, but I am sure he'd do a ELR style for you and that would give you a lower seat.