When I first got into reps I purchased a quartz SMPO,my first rep, and a Hublot BB,again quartz. I gave the SM to a friend and I rarely wear the BB. They just dont feel right. Expensive(realative) high end Swiss timepiece Is not going to be operated by a battery. If you dont have a problem with quartz reps then go for It,they look good.
Welcome to RWG,It seems like you are getting better and better as time go's on. Keep your prices competitive and Im sure your bussiness will be successful,again welcome
To each his own but I dont think you will find a rep of this or anything that It resembles. I agree that It might be a classic but you would need to go to a vintage/classic forum to find something like this,no offense
To be honest I really dont know much about PP reps. I think they are a few nice models. Take a look at the Classic tourbillions and the Aquanaut models. I think they have Aquanauts that are 40mm,good luck