Though you'll share a mutual feeling of support and togetherness, there is a basic disagreement between your beliefs and values that will become more problematic over time. Of course, you'll both try to ignore these differences in the name of preserving the friendship, as there is a genuine fondness between you that you'll both want to maintain. But little disagreements will come up here and there that speak to those fundamental differences between you.
Your friend may find you overly opinionated, in part because your strongly stated beliefs go against some of their long-held values. These clashing views could make it difficult to support each other's dreams and desires. The best route will be to discuss your views openly and without judgment, agree to disagree, and find ways to appreciate and understand each other without trying to change each other at these deep levels.