They all popped soil the 3th day after planting, 4th day from start. Day 8 from start, #5 is having a hard time hardening off. 2 are taking off, 2 are average. Day 12 from start, I don't think #5 is going to make it, other 4 are starting to take off.
Looking great... I like the structure of number 3. I also have the same mutation you are describing and amazed at the growth and structure. Already a favorite!