Yes, I am going for muscle, which is why I am looking at changing from my current style. I was recently diagnosed with hyper-mobility syndrome, which I knew I had, but being told for sure changes things, you know? So I need strength to help protect my loose joints. I also want to lower my body fat percentage, I am shooting for a 'fitness' level there about 22% or so.
Now, really the crunches I HAVE to do, but I can do them on different days from when I lift. I am in the military and they are a part of my fitness test. I don't have to do them frequently, just often enough that I can do 42-45 of them in one minute at test time. The ones we do are really more like a sit-up. I test next month, so for now they stay

After the test I will stop doing them until bout 6 weeks before the next test.
I will be youtubing the lifts tomorrow. I plan to lift 2 days a week to start, trying to fit it in around the other stuff I need to do to prepare for my fitness test. Since I can't do push-ups on my test right now, I need to focus on getting a better run time (hence the sprinting I mentioned in my journal). I practiced the other day and was at about 15:30 for a 1.5 mile run. I would like it to get down to about 14:00 or so. After my fit test I will probably shoot for 3 times a week.