Matt,
If I remember correctly, there was a 500# difference on the self-leveling FOL and I wanted that because of the weight of the front plow. I did not get the creeper option, but I did get the highway option. Thus, the speed in range III, gear 4 (or 12 gear) is a little higher for Road travel. Since my CaseIH dealer is less than 2 miles away, I wanted that in case I needed to take it in for any service.
On my Kubota, I did run the lines from the rear hydraulics to the front of the tractor, and that worked fine for the 15 years I had it. On the CaseIH, you can get the factory kit for front hydraulics for about the same or just a little more cost. Then the front hydraulics is just like the factory and you can use the two buttons on the back of the joy stick to control the hydraulics. Much nicer to have just one hand control.
I do have the power shuttle transmission and use it a lot on level ground. But, a lot of my property and driveway is hilly, so in those cases I use the clutch, brake, and power shuttle for direction change.
As far as power shuttle vs hydrostatic drive, they are both nice. But, the main reason I went away from the hydraulic drive was it is a power hog. You end up getting a lot less HP to the drive wheels under load. I often would bog down with the Kubota in low range pushing not that much snow. With the CaseIH, I am amazed how big a pile of snow I am pushing without any drop in RPM's and minimal wheel spin. Our driveway has a 20 foot section that tends to drift in over 6 feet, even with snow fence, but the CaseIH just pushed right through it with the blade not straight on.
Dick