success!!
Made a clean install of 10.13.4 with the igpu on primary, when system was on i’ve checked graphics and saw the 2 graphics card w7000 with his memory and hd 4600 with 5mb.
Used multibeast fixed the 4600, ethernet, fakesmc, definition macpro5.1 and reboot.
Boot superfast, then i put in the other two monitor on w7000 and..lights goes green and screen black and the 2 monitor recognized in monitor !!
After that i reboot, went into bios put intel off than boot, one screen was yellow and the other black,reboot again then went into clover boot option there was inject intel, reboot again.
One monitor works but boot was stuck at half, reboot again clover boot option inject ati, ati bios, denit.
Boot again and two monitor goes up, the last one was off, power on and finally three monitor works on w7000!!
Thanks again
@macs_forever for help!