If you are still positioning yourself as a racer, then the quicker-handling geometry should work well, but if you will be needing a relatively short stem and rearward saddle, then I believe the handling would feel flighty and nervous. This because of the transferring of weight to the front wheel tends to calm the handling, and vice-versa.

I prefer a short wheelbase, the front tire nearly touching my toes, but mainly for more safely drafting without touching a lead rider's rear tire.

I often see riders positioning their saddle and handlebars rearward as the years go by, but for this it is better to use a frame with relaxed geometry.
Some of the older Centurions like my Semi-Pro featured very relaxed frame angles btw. These look like racing bikes but handle/fit somewhat like touring bikes imo.

A forward positioning, on the other hand, positions the rider's weight for a more effortless and frequent transition out of the saddle to a standing position, which can make for much easier riding in the hills, and getting by with taller gearing as well. FWIW, I'm 58, riding in hilly terrain, and still preferring the racier bikes with 10-12cm stem length.