Flying Dodo
It'll soon be summer
Did the first recce today. Amended route worked out well, I don't think anyone who went last year will regret missing Cowleaze Hill out! Some parts I've never ridden before & proved a pleasant surprise. I was a little slow getting round to Blackgang, but the stretch between there and Freshwater really boosted the average speed (15.1 mph for that bit, even with the climb before Freshwater Bay!!) Didn't bother with going down to the Needles or doing the last stretch into Ryde, but there shouldn't be any issue with either of those sections. I'll be doing a night recce at some point in the next few weeks.
https://www.strava.com/activities/332790150
Cowleaze isn't too bad as hills go - although I guess the state of the road surface itself will have deteriorated further. However, the downside of routing away from that section & Bonchurch is that you miss out on the fabulous sea path all the way round to Ventnor. But as compensation, the Sunshine Trail to Wroxall is nice.
I see your recce bypassed Ryde itself - that should halve the (already single figure) car count!