Wow! The way your bike is currently set up I can't see you having much weight on your rear end at all. I'm 6'3" 210 lbs and was having the opposite problem- too much weight on my hands.
With the saddle adjusted to where I wanted it I couldn't get the stock stem on my Breezer high enough to get more weight on my rear end so swapped it out for a Nitto Dirtdrop from Rivendell. Also, changed the saddle to a Brooks B67 which was a major improvment in comfort over the stock saddle.
If it was my bike, I would swap out the suspension seat post and stock saddle to a sprung Brooks.
Here's a pic of my Breezer-



I still get a little tingling in my left hand but I'm going to leave it as is as its otherwise very comfortable and a pleasure to ride.