Do I need 2 Transformers for ring pro if I have 2 doorbells

Long post multiple questions sorry .... Do I need 2 Transformers for ring pro if I have 2 doorbells. 1 out front and 1 out back. Most people use the front door. But we have a sign for deliveries to be made out back. We have dogs, so some leave at back gate even if dogs in house, others will put on deck if dogs in. But sometimes people use the delivery sign as excuse to come around back of property. So I’m thinking of 2 hard wired doorbells one on each. I have a safety light that I’d like to change out to ring flood camera hardwired as well ( but wanted to know if can be set to do dusk to dawn stay on ) or just add the hardwired if doesn’t to come on as add security. I actually plan on adding several cameras 1 behind other buildings ( garage & pool house into side yard) and one that would see down driveway towards street ( so if they cut through neighbor’s yard I’ll know) (my house U shaped and back door at top & faces to opposite top of U ) and under eaves to see street view if they try to hide behind other neighbors fencing & trees. I plan all hardwired with possibly eventual solar backups. So I like to know about amp on electrical box switches. ghz on router ( I have my own router/modem that does 2.5 & 5g ) what bandwidth I should be looking into with ISP ( I’m lowering my cable channel’s load to pretty much basic since we’ve been using Netflix, amazon prime, Hulu, Roku and other free to lower cost streaming apps on tvs ) so I was thinking the 1g Internet DL should handle TVs, my smartphone, a laptop & wireless printer ( we’re not gamers & grandkids don’t come over as much to use ) I have an chime extender pro. ( Kind of peeved last cable guy removed our service amp, I think he saw the ring boxes on table that came day before a knew I would be using service in pool house & garage again and now they charge for those calls to add on wiring ( he removed wiring to those buildings while I was out and just husband home ( totally tech clueless & doesn’t think long term down road possible wants or needs ) So 1) do I need more than 1 transformer if I hook up 2 door bells pro cams 2) breaker switches & amps size for cameras with flood lights 3) ISP bandwidth for multiple doorbells & cameras 4) flood light camera can the lights be set to stay on dusk to dawn or are strictly motion activated 5) would I need my isp amp back for helping service reach a 50 ft distance even through back of a building 6) current doorbell is over 20 years old guessing wiring even older. Will I need new wiring?