Can I set cclock, mclock, cvddc, mvddc with this miner or do I need extra tool for that?
Hi, i think you can do it with OverdriveNTool or similar 3rd party soft. I guess you cannot mine with claymore same as me

Correct, for the time being we don't support setting clocks/voltages/timings/etc. It will most probably be added at some point, but for now you need to revert to wattman/overdriventool/afterburner or some other tool.