you propose your risk mgmt is the best for someone else.
It is not.
professional trader has to follow trading plan.
Trading plan has to define trae size and risk.
It could be any number which is working for you.
I can for example imagine trading 1 lot trades on 1,000 account. With tight SL TP it will work as long as majority of trades will be profitable.
Considering what you say, I bet you don't trade more than $100,000, because I cannot fathom even an insane person trading 100 Lots on $100k, let alone 1 Lot on $1000.
I had trades of 20 Lots on my $5m account and I was getting slippage and partial fills, so I had to split my money and trade smaller accounts.
The Yen Flash Crash slipped me so bad I couldn't get filled at the prices that would have saved my account - and I was using much less risk than what you are advocating!
I am speaking from experience, so I know you really don't understand what you are saying.