Best set-up model for my needs

I’m just learning some of the acronyms and terms so bear with me…

Our plan is to relocate to France, ideally within this year. We need to get the finances right and I want to avoid as many hidden costs as I can. Here’s roughly our intentions:

I work today with a Sàrl set-up in Switzerland as this was my only solution when I set up my company 8yrs ago. I couldn’t have operated as self-employed as I only had 1 client. Today this is more or less the case however I am adding 2 more clients within this year, all 3 clients are in different countries and none are in France. I have understood that a Sàrl in France would give me little or no protection vs self-employment, can you explain a little more about that please. My financials would be roughly as follows:

• Revenues €200k
• Travel expenses €50k (approx €5k pa spent in France, all else spent outside)

My objective is primarily to have the lowest cost financial model for my activities however I can already see that there’s a balance between low cost and high risk…..

Assuming I need 3 clients to achieve one of the business models then what happens if say in year 1 that I only managed to invoice 2 different clients?

A small twist to this maybe is that we would likely have some small activity in France with most likely 1-2 gîtes or farming revenues, say €20k revenue max p/a and out of that 20% being expenses. Does that change any of the above?

Many Thanks