Great setup indeed.
How much would that cost me yearly?
I feel like adding Estonia to this would be same as maintaining a Cyprus company (~120 BG+120 EE=240 per month on accounting)
Probably around 500 EUR/year will do.
And when it comes to incorporation, you might get it done for another 500.
Then add BG accounting for 120 per month.
Either way, with your budget, it is better to stay out of Cyprus.
Otherwise, I would prefer Cyprus, but you need to spend more in Cyprus for a decent quality of life. Everything costs 2-3x more.
In Bulgaria, the wages are 2x cheaper, and the talent pool is 5x bigger, so it's easier to hire staff and establish economic substance.
You live in France? You pay French tax.
You own/control a company while living in France? The company pays French tax (regardless of where it's incorporated).
Don't want to pay French tax? Don't live in France.
Super simple. Anything else is playing with fire. It's your life, your money, your liberty, your future.
If you're open to relocation, Cyprus is nice. Malta is also nice. Lots of tax incentives. I think the average French person would suffer in Estonia (cold, dark) and Bulgaria.
Your summary of the French tax system is relatively straightforward, but your post is not exactly inviting to discuss the nuances of taking calculated risks.
While I understand the position of the OCT administration that the forum should not promote illegal practices, I believe it's perfectly fine to discuss risks. So, to rephrase your statement, you claim that the OP, with his structure, will be 100% exposed to French tax risk, which is not worth taking.
Now, to expand on this, take a group of friends in different countries who set up a business in one country. One person works for a few years for free for this entity. Does it mean that if they have one French citizen in this company, immediately, France will start a cross-border tax investigation, spending probably way more than they could get back from the business in taxes? Sometimes, probably yes. All the time - I don't think so. What is the risk with different structures?