Trouble is an old lorry based unit is exactly that and will require lots of ongoing maintenance. Something like the above would cost peanuts to run and maintain. Put it on an Ifor Williams and I’ll buy one with you.
Yes, I've got 10 ha in for my own multiplication, very clean with minimal fungicide. Agree spec weight looks like a potential issue. I also have Extase for multiplication, I'm wondering about mixing the two together, good disease, high yield and spec weight lifted. Can't see why it wouldn't work.