I was a little concerned about this when I get the counter cut and laid in (I’m 6.1) but now that I’m used to it I’m ok with it. That said, I think my answer, should I find it irksome long term, will be to add a sub layer or two of 2×6 below the entire footprint of the bar (raising the front counter to 45.75 should still be comfortable for patrons. Another answer could be to raise just the height of a second of counter, perhaps by adding a thin drawer for bar tools (another thing I’ve considered). Good luck with your build!