Wedding Party Decision?

So FH and I are friends with this other couple. We do almost everything with them majority of the time. We even have a group chat on Facebook with the four of us. I refer to the guy as FH's boyfriend haha. They are probably closer then me and the girl are but me and her have gotten closer lately. Anyways I assumed FH would want the guy to be his best man. I asked him a couple days after we got engaged and he said I don't know yet. FH's originally from a different state and said he was gonna call some of his old old friends. Which he hasn't done yet haha. He said Shane(the friend we hang out with) is definitely in the wedding but he doesn't know if hes the best man or a groomsmen until he talks to his old friends he grew up with. If he was to chose Shane then I would use Nicole as my MOH. I don't have a "bestie" anymore. Shes the closest thing. I HAD a bestie but that blew up in flames. I have a best friend since we were 7 but she moved away and we are not close like we use to be, she has another best friend she lives with. We barely even talk. Shes moving back in November of this year tho. However everytime I see Nicole shes like basically begging to be in the wedding. Shes always like have yall chose whos in the wedding?? Shane and Nicole went with us and my mom to our venue for the second tour, FH invited them. FH told Shane he's in the wedding but hasn't told him where yet.

If he choses someone else for best man then I will have my old friend be MOH by default, I think she assumes shes MOH based on FB messages haha. I know I don't have to chose my MOH based on his choice but I want them(S&N) to walk together. I was gonna do bridesmaid proposals with customized hangers but can't do that till FH choses. Do we need to chose our wedding party asap? Or do we have time? Wedding is October 2020. Sorry if I'm rambling haha.