Cleaver North Col Route from the lake that connects with the NE Ridge, is a solid but moderate Class 3 if you stay on the obvious line. My Profile photo is from the summit after doing just this route last spring for the umteenth time.
Now the North Arete of Russell, that can get a little tricky for your buddy. It has some solid Clyde 3rd Class stuff above the notch located 4/5th up the route. That equates to encountering some solid modern day lower 4th class up and just above the notch. Clyde in fact rapped down (per his journal) a short portion of this section into the obvious notch when he did the traverse as mentioned above. I have done this route in several manners. Up, down etc. Been on the three located to the left of it as well. Good stuff.
Be safe and have fun.
Here is a shot of the NE Arete from Carillon Summit that may assist you.