Is it okay to use different products because...?

That's perfectly fine. Although when talking to my dermatologist, she told me Clinique's moisturizers are actually quite bad for acne. Not sure if it's true, and if so it may not be the case for you, everyone's skin is different. I use an Aveeno moisturizer with SPF 30. I like it a lot. I think it's the ultra-calming one. Best of luck! And yes, sunscreen is very important. (Especially if you're 2 shades away from being albino such as myself :))