the Whisper will be absolutely fine for your needs 👍
many shops (eg Pearsons) don’t expect stock for months and will probably be more expensive.
Importantly, if you plan to be an all weather all year commuter, use the warm light summer months to build cycling fitness, strength and road craft and sort good routes before the nights draw in and the weather cools and dampens 👍
if you finally buy a bike in October or November, I’ll bet you really struggle to muster any enthusiasm for your long commute!
it was lovely cycling this evening, don’t miss out on summer