You could look at a suit with removable liners. I have an Ice Armor Ascent suit, and without the liners, it feels a lot lighter and easier to move around in, I'd guess the Striker Climate and Windrider Hayward suits are similar. You'd still get the flotation, which does add some insulated warmth, and the water/wind resistance and breathability of the ice suit. Downside is those are usually the most expensive suits.