I like my drag bars with the 6" risers because they allow for a longer reach, but...  I'm short (only 5' 8") and even still my drag bars were too close when I got my bike.  I had to reverse my pullback risers to give me more room and I still think they're a couple of inches too close.  You being 6' tall surely have a longer reach than I have so I'd go with z bars if I were you...probably 9" would suit you.  I might also consider extending the forward foot controls as well.  That will change your posture entirely.

I'm about the same height and wt. as you and what check says is about right.

But I'd go to an independent store and just pick out a set that you like.
You'll want about 30" wide and at least 6" tall to clear the tank.
Take a set in your hands and extend your arms like you're riding.
If the pull back fits your wrists, that's the one for you.

You don't need dimples, you don't need holes.
when you fit your controls, just file off the "pin" that fits into the bar.
the control will grip the bar tight enough not to move on you.

Thanks for the advice. I might stop at the store and just feel out some bars they have there. Might possibly do the forward controls as well.

I used Norman Hyde M Bars and ditched the risers. I'm about 5'11". They've been very good, just have to watch the tank clearance.

On Off-Road bikes...we always leave the controls just loose enough that they are snug but can rotate with some pressure.  It helps keep from bending or braking in a fall, as they can rotate if they need to.

I do the same thing on my street bikes.....I tighten them just snug enough to stay put when riding..

Something else to keep in mind that's not talked about often enough. Your risers/bars are held on by a bolt that passes thru rubber bushings fitted into the triple tree. The taller the risers/bars the more stress your putting on the rubber bushings. Over time these deteriorate and cause movement/slop in your bars. For me personally unless your going with a drag bar type or broom stick type (straight bar) that won't clear your tank try your best to get the rise required to clear out of the bars and not the riser. The closer the mount point of the bars are to the triple tree the less stress your putting on those bushings. You can also swap to urethane bushings that hold up better. To many times I've seen guys with 6+" risers and you can literally shift the bars around because it's over exerting force on the bushings.

I use my drag bar and just turned the risers 180 deg and the extra reach is excellent for me as I have a very long upper body