Thanks for the update SV. As others have said, it really boils down to whether you would be happy to get a lower spec car now (at a discount), or the right spec car later. Others on here can advise as to the current lead times if you start from scratch but I’d guess at 4-6 months. Personally I would never pay £10k plus AP plus options for a compromise car, but we are all different. You just don’t want to be regretting your decision over the next 3 years!
If you do decide to re order the car that you actually wanted in the first place, then I would absolutely NOT order from the same dealer. They don’t deserve your business. Having the wrong / lower spec car is entirely their fault and their problem. They are even telling you that you will continue to receive poor service if you order from them! There is no issue whatsoever with ordering from another dealership that is elsewhere. You can still have your car serviced, maintained and any warranty / recall work done at your nearest Peugeot dealership and you will be dealing with different people to the sales team. Good luck and let us know how it ends up.