Those are the best basic exercises for sprinters alike. You can add a different variety of exercises that may be beneficial, but not as critical as core exercises. You aren't limited to ol's/sq/press etc. I posted this web site here and it is helpful and gives you options on what you can use for strength exercises.
what tha hell, no need for all that miss, keep it simple (KISS).. ol and var, sq and var, press and var, thats all the variation he need.