Here's my two pennies:
Your altitude would probably let a little more compression work for you. If you have junky gas there or if you plan on moving to a lower altitude some day, then you may want to stay where you are. But to be honest, the difference between 10.7 and 11 or 11.25 will be negligible anyway.
A few notes on the cam stuff:
DCR is a nice tool to use when you're concerned about what you can get away with on pump gas. However, when you get into larger cams for big displacement engines, the DCR is going to be low and there's not much you can do about it. You could potentially advance the poop out of it, but you'd be probably be at <100° ICL on some cams. Does it matter? No. I only use DCR as an upper limit tool, not a lower limit tool.
Also, engines can have over 100% volumetric efficiency. When that happens, DCR kinda goes out the window and static compression is what the engine sees because the cylinders can be "overfilled". To dumb that statement down, you can't just keep bumping the compression ratio up and think that you can just add more cam to run on pump gas. "I'm at 14.5:1 compression but the cam is 350° advertised duration, so it should run on 93 octane!"
You have a heavy vehicle but you also have a big cubic inch engine with modern cylinder heads that will make a lot of power. And again, the altitude helps you. 11:1 seems safe to me.
Jay and I are working on another build for another gentleman that has roughly the same specs as you. His cam and your cam will be extremely close to each other. I am having his cam ground now and it will be at Jay's in a week or so for testing with the crossram EFI manifold, so Jay will have the cam card for it.
You asked about the 1.95:1 ratio rockers in your email. With these hydraulic rollers, I can set them at around .660-.680" lift with a 1.76, so I'd aim for that. Valve spring and lifter requirements change when you get into more aggressive lobes with a lot more lift. We are making leaps and bounds on camshaft development for the FE, but most FE's will not have extremely light valve weights, like you see in an LS, SBF, SBC, etc. You can get away with a lot more when you're running 7mm valve stems, hollow stem valves, or even titanium valves, but when you're looking at large diameter, long length stainless valves, the lifter/spring package requirements change.
I urged Jay to go to the larger rocker ratios so that we can run some standard core solid roller camshafts instead of paying $$$$ for special cores. We ran into this on the cam I spec'd for his dyno mule and if he had used a 1.8, 1.85, or 1.95 rocker, we could have ran a lot more lift.
