650C vs 700c gearing

[Jolt]

Also, if you are on a group ride with a large rack on your bike, that will make it harder to keep up.

Only if the rack has a bunch of stuff on it...

[Crankin]

I have a 47 cm Trek Silque with 700 cc wheels. It's perfect. No toe overlap. Ten years ago, I had a Trek 5200 WSD 47 cm with 650 wheels. Both were fine... but I feel no need for 650 wheels now.