I think you should find a ram that you can live with the rest of your life and kill it.
I'd say score wise you're probably looking at about as good as 203 is these days. Like I said in my first reply, if you're going after score, the first ram I saw that I felt was 180 would get it.
I dont think any of the rams you posted would make 180...definitely a couple that are 175 ish and definitely some great looking rams. I doubt you're going to uncover a huge ram in that unit, maybe a low book head at best.
I doubt theres any tag holders left, you can USUALLY relocate the rams you've already found pretty easily. It would be worth looking in any areas you think may hold some sheep you havent seen as I doubt theres going to be much competition at this point. You have nothing to lose by looking at more sheep and you get to experience more sheep hunting. Win-Win.
When my Dad had a Montana Ram tag, I spent about 8 days just looking at rams and trying to see as many as I could. I took pictures/video of just about all of them and let Dad take his pick of the ones I'd found. He killed the ram he did based on look rather than score. The way it worked out, the ram also scored 183+.
I can also tell you that Dad wouldnt have cared if his ram scored 170...it was the ram HE wanted.
Just find one that suits you...
Good luck.