We very recently became engaged and just started talking about the wedding, we dont even have a date finalized yet. So I am new to all this and not sure how it all works all help is greatly appreciated

Due to very uneven numbers and money constraints we decided to have a family oriented wedding party containing cousins and siblings only so we will each have 3. I agreed to this and am alright with it because logically and financially it makes the most sense, if we could afford it I would have had my best girlfriends up there with me with also... but that would make it very uneven in numbers like 8 and 3
My question is my best friends will be helping me plan the wedding, be planning the bachelorette party, and be very important at my wedding planning, as much as the bridesmaids if not more, but I cant have them up there standing with me, how to I make my girls an important part of my wedding even though I cant have them in the wedding party, also how do I go about setting up all my dream wedding photos realistically since they wont be in my wedding party or wearing bridesmaids dresses??
I hope this makes sense?
Thank you Everyone!!