I have Mountain Horse Firenze (the ones with elastic) and they just barely fit my calf, and are a little tight. I too, have a roomy footbed.
For the rubs on your ankles/heels...this is what I did. I went to walmart and I got that rubbery non slip shelf liner stuff...not the thin one, the thicker one that you see other things made of. Cut a strip about 5 -6 inches wide and about 12-14 inches long. Now starting at the back wrap it around your ankle and where it goes over your foot, cut out a triangle to make it fit. You want it to wrap around the ankle and be smooth. Fix with duct tape. Wear these "ankle guards" in your boots for the first month or so until the boots break in. If you make sure they are smooth it should keep you from rubbing the backs of your ankles raw.
For the tight calves (I even have elastic) I dunk the calf part into a bucket of room temperature or cooler water for 10 seconds, then put them on. Zip slowly. As they dry they will conform more to your calf and loosen up.
I have to dunk mine with EVERY where because my calves are actually 1/2 inch bigger than the boots specify....but it has yet to do any damage.
Here is what my "ankle guard" looks like and I have shown in them. 2012-09-21 17.00.13.jpg 2012-09-21 16.59.52.jpg