Can I apply EA to other schools even though I’ve already committed (D3)?

Coach never specifically said full support, but he certainly seemed to imply that in our communications. Thankfully, money is non-issue in my family and we can pay full price pretty much anywhere.

I feel like I have a good shot of getting in with his support, however it’s a pretty damn good school and I’m by no means totally confident. That’s why I’d like to apply to as many schools as possible, basically every school on my Top 15 list that has EA/rolling (A mix of LACs where I could swim and Power 5 state schools where I’d be doing club). While that may seem like a lot, I just want to get ahead of the game wherever I can. Is that too many schools?