I would use
1. A Katana for close combat
2. An Assault Rifle for crouds of Zombies
3. 10 or 20 Grenades
4. A bow as backup
5. Glock
6. Shurikens
7. Desert Eagle
8. 4 Machine Pistols
3) That is goin to make quite a lot of noise..which could easily alert zombies in the vicinity with much ease
4) Going to need A LOT of accuracy. Even well trained marksmen would be hard-pressed at hitting the head of a zombie while it is in motion
5) Grip is poor..can't remember the name but there is another game of the same design with a much better grip and, I believe, a larger ammo capacity
6) Going to need A LOT of accuracy while at the same time having good throwing strength
7) Why have 2 pistols? Also..loud. No need for the strength since you aren't facing people with body suits on
8) Again..why have multiple pistols? 2 is arguable..but multiple i just asking for trouble..why?
Because of the main thing..you have a lot of weight on you. You need to think of supplies as well,,with all these weapons, you'll be slowed down heavily