Been playing with your first combo and if you want 1% more damage you can end with f4,3. Or you can end with a f3,1 EX dagger toss for 33 percent.
You can also red dash into x-ray for like 37 or 38% at the end if ya want.
I just have a hard time red dashing consistently after the f2,1,2, 1+2. I keep canceling into the dagger throw before the 1+2.
Edit: found out what I was doing wrong and am able to do it consistently now.
after the red dash + up slash go dash 2,1,2 for 9 Hits 31% damage