Any advice or changes you think I should make to my conditioning routine?

30*3 press-ups, holding down on every tenth count for
10seconds.
12*3 Backs of the wrists press-ups
7*3 one handed press-ups
50*2 crunchs, holding up for 30 seconds on the last one
100*2 cycling crunchs
30*2 leg raises, holding for 20 seconds on the last one

It might sound a bit basic but I am aiming to increase my strengh. I've been doing this routine for about 3 weeks and it has become easier and easier to do. I also train twice a week for MA, play football(soccer) and cycle about 14 miles 4 times a week. Any opinions or suggestions or improvements you can offer?