Trading for Demon Slayer Duos

So after my pulls from this run of Demon Slayer, I have at least one copy of basically everyone but the duos. Combined with my pulls from previous runs, I have enough fodder for a few trades, but not enough for all of the teams I could theoretically make. From what I understand, my trade priority should be as follows:

1. Tanjiro and Nezuko for the badge

2. Tanjiro and Giyu

3. Muichiro and Mitsuri

4. Tanjiro and Tengen(would be my 2nd)

5. 2nd Tanjiro and Nezuko

6. Tengen and his wives

Does this make the most sense given the only characters I don't have are Shinobu and Kanao?