Well, thanks a lot to you all for your help.
After querying the product vendor (ag photographic), and after tests made this night, I can say that this kodak RA4 RT/LU 4x5l works well in a rotary jobo processor, without starter.
For information, if someone is willing to split the mix, here are the quantities of concentrates for this kit (in europe, at least) :
Concentrates to make 5L :
Dev :
A = 250ml
B = 120ml
C = 250ml
Blix:
A = 700ml
B = 1000ml

(this matches the DREW WILEY's indications)
Thanks all.