orena45 you're correct, the £1650 version is with Stealth Reverb. It can be a bit confusing, but our commerce site which will launch with the bikes lets you pick a base model (frame/fork/groupset combo with our 'recommended' component choice) and tailor it from there. you get a base spec for £x (so 1500 for example for the one on our site) but you can change different components as you see fit, and the system recalculates cost and weight as you go. A bit like Dell's site if you've used it. Some changes are free, some cost a little bit. Depends on what you go for.
getonyourbike - one of the options you can pick is a Cane Creek Angleset in any half degree increment from 66 through to 69 degrees, set for you from the factory. You'd only need to buy a new set of cups (from any CC dealer) if you changed your mind later.
All of the above customisation still fits in a 3 (working) day delivery window, or 5 days if you opt for tubeless (as we will leave the wheels 3 days to set in case of leaks).