What do you think about this exercise routine?

sokkache

So I don't have a lot of time on my hands to go to the gym everyday. But I try to go around 3 times per week.
Tuesdays are my "big" days at the gym. I do:
Machine weights (circuit) for about 20 minutes and then I go into the cardio room and:
- go on this Cybex Arc trainer for about 6 minutes at level 50 (really gets the heart rate going),
-then I go on the elliptical for about 30 minutes and
- finally cool down with some uphill walking on the treadmill.
After that workout is done, I play Volleyball for 2 hours.

Another day I go to the gym is my HIIT time with no weights. I do that for about 30 minutes of sprinting for a minute and cooling down for 2 minutes, then sprinting 90% for 2 minutes and cool down 3 minutes, etc.
After HIIT, I cool down by walking on the treadmill or going on the bike.

The 3rd day, I go to the gym, I do light machine weights and light endurance cardio, like elliptical for 45 minutes.


So that's 3 days out of the week that I go to the gym

Then 2 days other than that, I do at home workouts:

I will do the 1000 workout first:
-100 jump rope
-100 squats
-100 crunches
-100 lunges
-100 half cobra pushups
-100 high knees
-100 tricep dips
-100 hover jacks
-100 mountain climbers
-100 bridge pulses

Then after that I do another 100 crunches in different positions (e.g. bicycle crunches)
And I also do some leg lifters and then I do another video that works the inner and outer thighs.

Does this seem good with the right diet?

Plus, I'm only looking to lose about 15-20 but I want to have at least little bit of muscle definition you know, like a shakira body.