I’m treating the heat as an excuse to play around with minty flavours.
I had a Four Roses bourbon and the Giffard Menthe Pastille and Combier Triple Sec. For me, the mint overpowered the orange. Maybe 12.5 ml Triple Sec and just 7.5ml Menthe would make the balance perfect? It’s a very smooth sip.

Surprisingly ok+. Tastes like a stirred Mint Julep. Very little orange flavor cutting through. Used Four Roses and a cheap creme de menthe and this doesn't taste cheap.