@DEVLINCC I read what you wrote but needed a bit to think about it. For my first ever tour I had quite a bit more weight, and the bike would often flip up at the front wheel when handling/carrying it 
I looked a bit more into the front-load-low-trail thing as well and can say I’d not design a bike for me that needed a front load to dampen steering. Let’s see if I can get away with this.
I found some good info here as well Chainstay Length Discussion
So I played around with cad a bit and it seems that with a 445 CS I can get the rear panniers about 40mm in front of the rear axle. Seems a good starting point.
So why not go full design mode:
I’m 172.9cm / 84.2cm inseam.
Fork: I found two forks that match my tire clearance desires that also allow routing dynamo wire into the steerer Tube. Seido RGT/Enve adventure. With the enve having a flip chip allowing to play around with fork offsets a bit.
Seido rgt: 47mm 28"/54mm 27.5" | 400mm AC | 50mm offset
Enve adv.: 53-58mm 28"/61-66mm 27.5" | 398-496 AC | 49-55.5mm offset
I’d guess the seido will look a bit better with the skinnier racier tires. But I can’t find any drawings to check the actual dimensions.
CS: 445, could be interesting to have a flip chip rear and flip chip front to transform the bike.
Stack ~610
Reach ~375 @ 71° HT angle, but this might change