The incline to Harvard is relatively easy but long. Maybe two or three class 3 moves right at the summit. The traverse and incline are to Columbia are easy physically (obv if u aren’t fit u are going to be dying) the route is difficult to find. I used my gps on phone. The descent is very steep w scree but gets u back quickly. I recommend going up Harvard. It took me 9 hours but I’m on the faster side. Average will probably be 12/13 hours. Def make sure u have done longer hikes w a lot of elevation gain and be confident w route finding.