When we are talking about investment banker at chase, who invested just 1500 dollars, I would say that coinbase would be enough for you and nothing else is needed. Do not go around looking for trouble, there are so many people who gets their coinbase account hacked because they try to make a lot more money and turn that 1500 dollars into 15k, and in doing so they end up losing their money because they get scammed.

If you can avoid that, and only focus on buying at coinbase and do nothing else, then you should be fine, that doesn't seem like a big amount for you, it doesn't look big amount for anyone really, do not look for an alternative until it is a great deal for you.