I'd be interested to see how you go to give an idea of a fast pace for the course, albeit you'll be slower than a mid-season ride with full fitness in good weather. I've only ridden the full course once and it was going fairly easy in miserable weather, stopping to check directions and having to do a couple of checks and re-routes when my original plan didn't work out. I plan on riding the course again to see it properly as it was through a haze of drizzle last time .
Hope you like the course, there's a couple of bits that are a bit so so but needed to link, but the bit from Barns Green to Faygate is one of my favourites in that area. Broomhall Rd to Coldharbour followed by Arbinger Rd to Leith Hill are lovely but after Leith Hill and Friday Street when you start to descend Hollow Lane take it easy or you'll overshoot Donkey Lane which is on the left just as the hill starts to drop away.