You didn't mention where the founders are located or anything about what type of payment processor you might need, or if you were incorporated.

If you are not already incorporated I would checkout Incorporations.IO to compare different jurisdictions and see which might be best for you.

The two countries which lead the world in international banking (in my opinion, which is formed by having setup hundreds of companies for entrepreneurs, many of which have a remote team like yourself) are Hong Kong and Singapore.

Just because you have banking there does not necessarily mean you need to have formed a Hk ltd. Or SG Pte. Ltd. company. There are a lot of factors considered here and I only have limited information, but it may be worthwhile for you to checkout Hong Kong and Singapore as a banking hub for your global business operations.