I went out today, too. I ignored the blacks since I have no confidence in my brakes right now, and stuck to the green and blues.
I think your descriptions are spot-on. Itsy Bitsy is pretty swoopy in its numerous bermed switchbacks, so you can get pumpy with that. Stay high and out of the gravel and this trail just got more fun.
Viper's Den has two turns not far from the start that are going to need rebuilding. The berms were blowing out, so by the time I left today, I think it was the one of the right-hander berms that had a huge rut along the upper half. Someone out there told me they had "200 riders" yesterday and attacked like locusts. There were these blown out turns, and numerous holes from the rocks knocked out of the trail.
I hit Venom (the blue that starts 1/2 way down) a couple times. It's a little (barely) more tech than Viper's Den, but empties out into the hardpack jump line. Nice table top jumps (6-8' I'd guess, lip-to-lip), well packed, and good visibility. Definitely a fun line.
Oh, the pricing is $50 for the lift ticket. No land-access fee that we were seeing on the website, just the lift ticket.
And the chicken tacos from that little trailer were awesome.