You can get the 4-12 x 40mm scope and give it a try. As for trying to co-witness it with your front sight, it’ll be a trial and error. The rings come in low, mid and high. I’m using a mid.
Personally, I don’t worry about co-witnessing my optics (redo dots or scopes) with any iron sights. It’s either irons or scope/red dot for me to keep it simple. Besides, my rifle is not for hunting or self defense anyway.
Good luck.