This is a great stack of supplements and you can use all of them at the same time.
I don't use Alpha Male personally (because I'm a female) but I know a lot of guys who use it and have great results. It's the best testosterone booster out there by far.
I've been using the other 2 supplements for 3 years now and I've experienced great results and progress in my training. Use the Micro-PA and Indigo-3G as indicated on the bottles. If you're training twice a day you might need to do it a bit differently. You should notice increased strength in the gym and some crazy pumps from the Micro-PA that's for sure.