Get the smallest bike that fits. It’s easy to resize a smaller bike, much more difficult to resize a bike too large as once stem drops below 90mm handling tends to suffer whether climbing or more interestingly descending where steering feels too sharp and front wheel too light.
I played with 75 and 80mm stems on my 54cm tarmac and found them detrimental to handling, with 75 I would catch my shorts on tip of saddle when moving to stand up off saddle
Cheers esher, that’s just the sort of advice I’m after.
Its totally at odds with my mtb experiences, I’m now running the shortest stem I can (well always did on the dh bike), with a longer top tube as it’s better for DH and will still climb. A longer stem = better for climbing not descending in my mtb head….