My recommendation: Go Light on the gear
Much funner reeling in eyes and easier to read baits.
For walleyes a size 20 Magda or 27 Accudepth is perfect paired with a 7′ medium light trolling rod. The Accudepth linecounters stick far less, but cost more coin.
I like using 12lb 832 Advanced leadcore for eyes. The only downfall is you can’t use a Willis knot to connect your leader to the leadcore (I use a tiny barrel swivel, I think it’s a #10 SPRO?)
Definitely get line counters for contour trolling/bottom tagging walleyes. Even a 10′ difference in line can mean catching fish or not catching fish.
Build each reel identical. Mono is fine for backing unless you plan on running leadcore segments on boards.
Buy two identical reels.
Start backwards on the first reel.
Reel on 5 colors of 832.
Connect your backer with a swivel or a uni-uni.
Fill the spool until almost plum full.
Now tie your backer onto the other reel, set 0 on the empty reel.
Wind on all of the backer. Write down the number.
Wind on all of the lead core.
Now on the first reel (empty now), zero the counter and wind on the same amount of backer. Then wind on the other 5 colors.
Add a leader (I use 10lb flouro, and go with 25 feet), and now you have two identical setups.
Feel free to call me if you have any questions Ron!