By now your curiosity should have compelled you to be able to report on how it tasted,,,,, so?
I think you may have picked the most challenging bean to roast evenly,
the EG is renowned for its variability. Im not experienced enough to give you an opinion as to whether too variable or not but, if your happy with the taste Id be happy to help you drink it until an authoritative source shows up.
When I was poppering about 4 min would see 1st crack, then maybe about 7min for 2nd crack, was never 100% sure about second,
also poppers can be quite variable, and are subject to environmental vagaries. Lately I am fiddling with a couple of poppers to mod for coffee roasting, but the roasting hasnt happened yet.
On poppers my thought is to add beans to a warm and running popper and immediately insure the beans are circulating (a bamboo chopstick may help).
If you need to be your own critic read Cupping Room EG thread for some perspective.