S.B.
I was just reading something today that said it's best not to overdress babies.
75 or 76? That's almost 80! Nothing wrong with it. I wish it was at least 85 outside every single day. I can't stand being cold.
However, from the time my son was an infant, he slept too warm. It killed me not to have him bundled up in a million layers, but he slept very soundly in just socks, his diaper and a tee shirt. Even if I put him in jammies, I had to leave them unzipped or he would be soaked with sweat and that led to fussy nights.
He's 14 and it can be snowing and freezing cold and he still only sleeps in his underwear.
You might try to find some lightweight jammie bottoms if you're worried about his legs getting cold, but if he is a sweaty sleeper like my son, you might find he sleeps better a little cooler.
My daughter liked being bundled up even in the summer, but my baby son didn't like it even in the winter.
Just try different things and you should be able to gauge what makes him comfortable for sleep.
I wish you the best!