Personally I think the foot is highly irrelevant.
I have a free kick specialist DR who is by far my most valuable player (only scout I could afford, 22yo q34 -> pushed to WC), he's a right foot person but he is first in line to take all free kicks, corners and penalties. My striker has a corner SA but with his crossing skill 23 vs DR's 34 I don't think he'd be any better. The DR has played 10 matches over the three competitions by now and scored 10 goals + 15 assists. I think letting him take all those opportunities makes sense. Same could go for your no. 9.

-fragman