What you need to do is weigh the possible cost(s) of mixing them now verses later. Costs such as treatment of any possible disease(s) and/or having to loose the animals you already had as well as your new ones. It's your decision to make, all we can do is advise you as to what is recommended.
i will use the 45 day its just to bad for the goats that want to meet each other oh well they don't have to pay for meds also can goats use horse minaral blocks all thre of my goats like them they are in horse pens that have blocks and the lick them
Are the pics you posted on your other thread at your place? If so, they have already come into contact with your animals by sharing a fence line with the horse.
I made the mistake when I was very new at taking in new animals and allowed 6 new goats to come into my herd of three with out quarentine time and I lost my baby goat to an URI and almost lost her mom. Be very careful who you buy from and where you get them and always keep them apart!
the lady had no other goats and had those guys for a week she got them for her mare but the mare hated them. so they are not in complate quarantine but goat quarantine