That's a technically harder system to run, only holding.
IMO, to do it effectively, you will need a Christmas tree type with wind holds that deep in the reticle, or you won't be able to hold wind accurately. Pick one that is uncluttered and your eye likes.
800 yards is a 16 moa elevation hold out of a 7mm rem mag with a 180 at 3015 fps and a 10 mph wind is 3 moa. That is quite a ways out in space and below the horizontal stadia for wind.
Another thing to consider is that far outside of the optical center, there is more distortion of the glass. I know snipers that won't hold that far outside the center because they feel it isn't accurate enough. Its debated though.
Also, holding usually requires the max magnification on a second focal plane scope, so don't go too high on magnification, because anything over 15x can get too mushy to hold accurately in mirage. A first focal plane you can probably dial down magnification enough and still see 18 moa. I don't have an MOA scope to check that.
Any reason you won't dial?