7 months is an age! We organised ours in about 3 months but didn't take anything too seriously.
The main thing is that you are the hosts. Whoever you invite, out of love or obligation, is your guest. Don't ask them to spend loads, do loads, wait around for hours. Factor in your practicalities (pix etc) but give guests something to eat, drink and do while you are elsewhere.
Cut your cloth. If you can only afford a tiny meal, one small drink and no music to manage 100 people and super expensive flowers, have 60 guests and drop the flowers. If budget is no issue chuck money at it and you have plenty of time!
I was an older bride but have a lot of good friends and family. Not a huge budget. Off the peg dresses & suit, simple minimal flowers, beautiful vaulted village hall. Paper lace bunting and cheap flowers in hurricane lamps on the tables. Kids activity packs from Etsy.
We had a late, tiny ceremony followed by a huge party so no one felt left out as there was no day. Street food van with gallons of hot food, at 6pm so no one was hungry and we bought in wine, beer, cider and soft drinks as self serve. Plus a cake, sandwich and dessert table. Note on the invites re supplied booze (BYOB if you have discerning tastes!). No one really did. Everyone had a brilliant time.