First post on this forum so hopefully following the right procedures

I am a non EU married to a EU citizen, married for 5 yrs in October this year.
As I am on a spouse visa now I intend to apply for PR and then for British citizenship.
My husband has a PR (the actual blue card) and is intending to become a British citizen - would that speed up or affect my applications please.
So, if in october he applies for citizenship and I apply for PR; when he gets citizenship and I get my PR can I apply straight away for citizenship myself? Or it is not possible as he wasn't a british citizen for this 5 years?
And if he doesn't become british - and so remains a EU person with PR - in order to apply for british citizenship do I need to wait 12 months after receiving PR even if he has a PR now?
Thanks in advance