I was looking at the Venom, but they are very scarce right now (two month or more back-order from my supplier). I went with the Viper because it is just a hair smaller and they are available and the reviews on both are great.
Once you have everything set up, please share your results and images.
I had a hard time deciding Viper vs. Venom; but because I already had the stock tall SR tritium front sight, I took a chance that it might co-witness with the Venom rear body 'sight marks'. I got lucky.
I understand from another Forum member that the Burris FF3 (very similar to Venom) rear 'sight mark' also works with the front tall SR sight for lower 1/3 BUIS.