I did this until like win 10 and they switched up the cards on me... -_- Since I use Moe majority I pretty much have to guess where the weaknesses are. Win 10 he switched up so my Moes would lose... lol
I'd rather just go for the 50 win streak SR since it's guaranteed no matter what you do since you just farm the rank 5s and defense losses don't count towards the consecutive wins.
I tried just hitting rank 1s for the 5 gacha tickets, but I already knew that was a bad idea since rank 1s actually actively switch decks.