what you said sounds perfect.
I have had to wear a flaming ski jacket the last few days in the mornings even having to go to primark to get an emergency T shirt yesterday (ds's school is in the middle of the forest) and by 11 I was roasting.
Today was perfect. I had long sleeved stretch cotton T shirt,dark jeans, ballet shoes, knitted draped sleeveless cardi and a pashmina and I was very comfy and not hot by 2pm- although having read that back not very stylish either