Have a 7 saum and I did not experience the predicted fussiness with ABLR, I set them up to jump .1" and it wasn't hard to find accuracy. I had about 58g behind that 168, I bet there's a good h4350 load. But you're short on time, a second try might stay a nonstarter. I also use 180 eldm, it just works better than the eldx for me. It's stuffed down to 2.95" and it's pretty slow, but it shoots great. These are both on h4831 but I don't think the h4350 numbers were that bad. The BC is so high on the 180 it might not matter. Far from ideal, but they are vetted and available and you never have to worry about expanding. The 180 eldm is also substantially shorter than the 175.
My last load is a 140 absolute hammer over RL 16. I know you said you're not interested in going back, but I know for sure this bullet would sing if you want to use your h4350. The bc isn't high but I found it to be accurate, and it will travel at a speed where Bc isn't quite so relevant. It's also a really accurate bullet and load development should be close to plug and play. Just my suggestion.