I have a quick question for you. Are you wearing a neo or trilam in the scenario you mentioned?
I'm just try to sort out my own needs as I recently bought a DUI trilam. I have the really cold water undergarments sorted out but sometimes dive in warm 60-70F waters. Usually for about an hour.
My cold tolerance is generally pretty good.
Thanks
I'm not the original poster from above but with my trilaminate suit I picked up a set of fleece pants and jacket from REI. I don't know how thick but probably 150gr or so. I use these with a midweight base layer. These work well for me in 68-72F water.
If water is closer to 60f or i'm doing an extended runtime in 68f water then I use Fourth Element Arctics