That is the path I think the majority of us have taken. I started with the 7D. And you can take excellent photos with cropped sensor cameras.
I will say, I think FF is becoming more affordable. It depends upon your budget, but, as long as sports/wildlife are not your main subjects, but if you could pull off the 6D with a kit lens (24-70 f/4 or 24-105), I think you will find that to be an excellent combination. For something longer you could get the 70-200 f/4 (non-IS) if you are on a budget, or, honestly, their are some affordable 75-300 mm lenses that could suffice for a number of years.
Also, regarding FF lenses. I have been doing well with Canon refurbs. I have now picked up two lenses, the 40 mm pancake and the 24-70 ii from the refurbished store and both are excellent. At least here in the US (I don't know about Italy), if you watch you can get a 15-20% sale on the refurbished priced. I used canonpricewatch.com to send me emails of the sale.
So, that may be a way to make FF more affordable. But, as I said, starting with a good cropped sensor camera and good EFS lenses is an excellent place to start grow and, for many people, finish.
Good luck.