tat points are really up to the player. My opinion is to skip on SPR if you can help it, and grab the 120 silver potions early, then alchemist potions later. They're generally potent enough to keep you running nonstop, and the time they save can be spent earning back more silver than you spend.
Otherwise, I'd say play it by ear and go with just enough CON to be comfortable living, and pour the rest into INT.
As for skill points, don't know much about cryo other than people agree ice blast and gust are useless. Remember that you can save points from previous circles to invest in future ones. Playing around in the skill sim can help a lot with your planning.