Hi Nicky, welcome to the forum
The Pixel is a French design indeed (airtech-rc.com) and a very nice model!
Never had one, but tried a couple.
The CofG is between 70 - 75mm from the LE at root.
For the neutral position for the wing, the TE should be aligned with the molding line of the fuselage.
Great flyer, even in slow winds, but I found it "hard" to land, although, not a big issue in big wind, but the machine is tough!
Hope this helps, and don't hesitate to post photos and flight reports!
Fred