Thanks Danny (and CornellAlum). Ho, I better delete these photos, my xover really look amateur! haha I was afraid of cutting stuff... I took good notes, I'll make sure my AV3 are better!
For the wire I have a friend who gave me some left over. It's from Supra Cables called the Classic. Do you think I should not use this one? Here is what they write about it:
"The Classic series comprises highly flexible cables of tin plated multistranded OFC copper of purity degree 5N, which means >99.999% pure. The insulation of special ion stable PVC minimises corrosion of the sonically benign tin surface."