FWIW, I have run FireCalc with varying stock/bond ratios.
Interestingly, the best survival rate was in the 60/40 to 50/50 area with no big difference between the two ratios. I might end up with more $$'s to spend (or for my heirs) if I had 70/30, but at the risk of a few more years where my plan fails and I run out of money.
Going below 50/50 had no benefit in my situation. YMMV.
The worst decisions are usually made in times of anger and impatience.