I was in the same boat as you not too long ago, except I am currently in the CNM DNP program and wanted to either switch to FNP DNP or get the certificate after I finish my CNM degree. While in nursing school I got into a 2.5yr FNPDNP program and I got into a couple of CNMDNP programs and decided to go for CNM because that's what I wanted to do, and was told that the FNP market is so saturated, and that I should go for the specialty, especially if it's what I want to do.
My final decision was to go for CNM and go for FNP afterwards. I also wanted to see if I needed to obtain experience as an L&D nurse and I've heard from all of the midwives that I have reached out to that it is not necessary. What is necessary is to understand and appreciate the role and responsibilities that L&D nurses hold, although having that experience would help with learning about fetal monitoring and more. I am currently and urgent care nurse and I feel like I am getting an ample amount of experience as a healthcare provider in general and will have broad experience before I dive into a specialty career.
This is just my experience from what I have heard from people but ultimately it's up to you! Either way, I think you will be okay! :)