Hi Julien
Thank you for your comment and compliments.
It's a pleasure to read you because you have the right vision of things: you start early enough, you don't rush, you save enough (without depriving yourself of everything).
You remind me of myself quite a few years ago. Stay the course, you'll see it's worth it.
For your broker's fees: Swissquote is a good intermediary. In an investment approach such as the one focused on dividends, transaction fees are not the most important. Be especially wary of deposit fees... in the long run when your portfolio grows, it can hurt, especially since you can become captive to a bank/broker because of excessively high securities transfer fees. Postfinance is currently not bad (no deposit fees, many free services, reasonable transaction fees)... but they will soon partner with Swissquote, so I don't know if things will remain the same in the future...
For more information on brokers/banks, read this post
Otherwise, if you really want to keep your costs to a minimum, you still have Interactive Brokers
It is a reliable broker and really very cheap (1$ per order on US stocks up to 200 shares, 0.1% of the transaction value on Swiss and European stocks).