Dang, Sylvain... Those are ridiculously tall!
I've fitted mine today, and it's a really interesting feeling. Adding an inch and a half really helps that "commercial" feeling of having an elevated group. It also, indeed, helps the "cleanability" of the space beneath the machine.
Anyway, here they are. The one on the left is the one for the front left leg, and it's slightly shorter than the rest. These are solid Aluminum, cut on a lathe with a 5 degree taper They're about 2.75" tall, more like 2.9" total with the feet.

My friend cut out a recess in the base of the foot and tapped it for Mazzer grinder feet--something I can replace easily, and something I think will last a good long time:

Here's how the new setup looks with the legs:

I really liked the original Elektra design for the legs, and I wanted to stay true to it, but adding a little bit more height to the legs. I am really, really pleased with the outcome.
