I had the 3c archery tag in 2017 and hunted it for cows this year with my son.
Unit 1 and 3c are two very different elk hunting experiences. Unit 3c is covered in roads with very few remote places to get away from crowds. Almost all of the big bulls come in from the Rez to rut and return shortly after. The elk are pretty easy to locate and and almost every big bull will be known to many people. It has heavy rutting activity and large groups of cows. A lot of the unit is glassable and pretty easy walking. You can get vehicles to most any place you would shoot a bull. Even though there were lots of eyes on the elk, I never ran into another person once I left the road. But some mornings it was a dam caravan heading into the woods. The bull cow ratio here is very high and the second week of the hunt bulls start breaking fast. As far as bugling, this is a very reliable unit with pockets of insanity.
Unit 1 has areas that are easily accessible but also contains large areas of wilderness and some very remote areas. The unit has varied terrain from PJ flats and hills to large stands of high altitude fir and conifer forests. The highest points in the unit are 10k ft and the flats are probably less than 6k. There are elk everywhere in 1. The rut is usually strong here as well. Also, this is one part of the state where summer rains are pretty reliable. I haven't looked at the maps from this year but I would expect they got plenty. The downside is with 300 tags there are lots of folks around. That being said you can get away from folks once you hit the woods. There are enough elk to spread folks out. The rut is reliably good here also. For some reason bulls don't seem to break as bad in 1.
I say all this just to point out that after 15 years, you should go on the hunt you want. In my opinion chasing a trophy number may be less rewarding than going on the hunt you have been dreaming of.
Good luck, you have an awesome
adventure ahead.