I reached the conclusion that I want to build my "magica" system based on Gitzo tripod and Markins ball-head.
I'm still on a budget then I'll work out how to spread the cost over time.
The choice for the ball-head was quite easy towards the Q-20 QR (knob version). I then tried to play with the interactive configuration tool on Gitzo website keeping in mind the main suggestions and opinions I read here(JRP and Neil thank you!). The result of that is ... I'm totally lost
What I understood so far is that: I won't probably need to hang around with a 7 lbs tripod I won't probably need a center column I won't probably go further than a 200 to 300 mmm focal length
Please help me find the light at the end of the tunnel