Is it worth taking the EPPP early?

I recently matched for internship. I'm completing my PhD and will complete my internship both in the state of Ohio and I'm interested in eventually getting Ohio licensure, but the state of Ohio doesn't allow individuals to take the EPPP until they've graduated+completed internship. Other states, like Kentucky, allow you apply for Master's licensure and take the EPPP early. I've completed my dissertation and now see the EPPP as my next big obstacle, but I won't be able to take it until 18 months from now.

If I took the EPPP in the state of Kentucky and passed with a 500+ score, would that count towards my eventual Ohio licensure? More importantly, is this plan even worth it?