OP, I suggest you try a PWO first and see what results you get. Then after a properly scheduled stim break of between 2-4 weeks go for a fat burner and see how that works out.

I've noticed that some stimulant ingredients may appear in both PWOs and fat burners but the profiles are not completely similar.

Read the labels carefully before you try and know what you are ingesting. This way, coupled with your own experience of the product, you will know exactly what does and does not work for your goals.