reason why i have arms split up is because i have joint pain in my shoulders from prior surgery so i try to isolate my arms as much as possible and also my BI's are my weakpoint
So based on what your telling me i would do somthing like this
M-Legs/Abs
T-HIIT
W-Chest/Back
R-HIIT
F-Arms
Sat-HIIT
Sun-Shoulders
...
or
M-Legs/Abs
T-Chest/Back
W-HIIT
R-Arms
F-Shoulders\LIT
Sat-HIIT
Sunday OFF
I don't recommend the first option you laid out because you NEED a day OFF all training to ensure optimal recovery.
If you have joint pain in your shoulders, then I hope you have rehabilitated completely from your prior surgery - if you haven't, depending on how long ago the surgery was, then you really should consider it.
If you mean that your biceps are your weak point re mass and /or strength, then you are NOT going to gain mass if you are cutting, although strength gains can be made (albeit not if you're using a typical cutting diet).
If you're so concerned about your biceps, then do something like this:
Monday - Legs/Biceps/Abs (you can do a few bicep compounds at the end of this session, or I recommend doing them after your squats, and make squats the first exercise of the session)
Tuesday - HIIT
Wednesday - Chest/Back (your triceps and biceps get worked enough here)
Thursday - HIIT
Friday - Shoulders/Calves/Abs
Saturday - HIIT
Sunday - Day OFF
~Rosie~
The Primordial Woman