I've done this trail many times on a non-eBike. You are right the hills are fairly tough (especially if like me, you do it 6 times in a row!), but still a lot of fun. Interesting to see that eBike doesn't cut off that much time of my PB - around 5 minutes, but then I need a day off after my adventures!
I use to do them till I was flat out and barely could walk the bike down to the car park 😅 was much fun till I had to walk down .. but not anymore. The ebike however is a lot of help especially on the climb parts. With a big pack battery ebike you can run easily 6-8 laps and still be able to walk the next day 😅