Replace Video Doorbell 2 (hardwired) with Video Doorbell Pro 2 (hardwired)

Hi, I want to replace my Ring doorbell. My current setup: Video Doorbell 2 hardwired Chime Pro (1st gen) Comatec transformer - IN: 230VAC, OUT: 4…12VAC/24VA, 3TE I would be happy if you could help me answer the following questions: Will the existing transformer be sufficient? If not, what would I need and would simply replacing the transformer by an electrician be sufficient, or would it require any other changes to the existing wiring etc.? My existing Video Doorbell 2 uses a “corner kit”. Will I need to buy this as an extra for the Doorbell Pro 2? I am not too keen of adding new holes to the outside wall. I saw there is a “Pro Retro-Adapter”, but it seems not to be available? I like the sleek design of the Doorbell Pro 2. But now there is also the Battery Video Doorbell Pro, which seems to be newer (alas with a battery hence same style as my old doorbell). I saw, for example, that the Battery Video Doorbell Pro supports newer WiFi protocols (ax). Are there other advantages of getting the Battery Video Doorbell Pro instead of the older non-battery version, even though I know that I want to hardwire the bell? Is it perhaps just easier (use existing wiring and transformer for trickle charge) to go with the newer Battery Pro in my case? Anything else I should be aware of when replacing my old Ring doorbell? Thanks for your help! Alex