What should I do? (Breeder question)

My initial plan was, to adopt two Kittens from the same litter, as I think the chance that they get along well is higher.

Now I'm in contact with this incredible kind, reliable breeder (already visited them etc.). They can almost for sure only give us one kitten in mid July of this year.

We were also in contact with several other breeders which also gave me a good impression, but somehow my gut feeling and everything leaves me with a much better feeling when it comes to the first mentionned breeder and it would just feel like the right thing to do.

We are struggling with the decision to look for another breeder which can give as two from the same litter.

The alternative would be, to get the second Kitten from another breeder. Also important to mention "the second best breeder" imo would also have only one kitten for us as it seems and we could get him/her mid August. The Kitten would be only "alone" for about a month or so..

I saw all videos from Jackson Galaxy regarding the introduction of two cats and would really give my best to do it the right way.

Does anyone else have experience when it comes to adopt two Kitten from different litters?