#1 From where the guy in the orange jacket is located all the way to the big "chimney" where the blue and red paths meet each other, it seems at some point a traverse left to right is required across the rock. Are there good handholds and footholds to accomplish this fairly easily?
After the start, nothing to it. It's like walking on a nice, wide, ascending ledge. You hardly have to even put your hands on the rock.
#2 How much easier or harder is it going up the blue route compared to the red route? Are the holds better?
Blue is easier; there are plenty of holds for feet and hands. Red is a tad more strenuous, and the holds aren't so obvious: You have to look around a bit to see the sequence of moves that will work. Usually, with someone new, I go up the red route to give him a bit of a thrill; then tell him we're going down an easier route and that puts him at ease a little. Last time I did it in reverse, just for a change.
If you're tentative on exposure, you might take a 20 m length of light rope and a sling, to rap down the lower section.