I don't think there is a downside to running a 160 thermostat, so why not? They aren't expensive.
BTW, be prepared to destroy your water neck when you try to remove the old one (especially if it is original), and have a new o-ring handy too. I got a new one from NAPA, but I had to ask for a neck for an 89 TTA, it was in stock and much better quality than the original. I just had to shim the "fork" that holds it with a washer.