Obviously the WKTA 1330 site won't work.Wonder if Polnet Communications could diplex WRDZ with the the co-owned WNVR (AM 1030).
The WNVR site might work for an STA. I have seen STAs from nearly that far away.
There might be some clues on the WOOD 1300 application for 20000 watts. WRDZ was one consideration in this, one of the ones that made WOOD have to go very directional Daytime. They needed to simulcast on 106.9 Muskegon very soon to make up the lost service to the West and Southwest, especially Ottawa County. The other station to consider is 1290 in the Milwaukee Area.