Ok, i posted a little while ago on pleateauing in my chest... but now its spreading like a cancer... and i think i know why

I started this routine march 1st or around there, so its been a good 8 weeks, so its about time i guess?

Here is my current routine

Day 1

Arms/Shoulders

cable bar curl 4 x 8
cable rope pull downs 4 x 8
db lateral raises 4 x 8
db overhead extension 4 x 8
db seated curl 4 x 8
hs (hammerstrength machine, preacherbench) curl 4 x 8
hs press downs 4 x 8
smith shoulder press 4 x 8
smith shoulder shrugs 4 x 8
wrist curls 4 x 8
wrist curls reverse 4 x 8
abs (bunch of different ab stuff blah blah)

Day 2 = OFF

Day 3

Legs

smith squats 4 x 8
hack squats 4 x 8
cybex leg curls 4 x 8
leg press (one leg) 4 x 8
seated calf raises 4 x 20
standing calf raises 4 x 10


Day 4 = OFF

Day 5

Chest/Back

bb flat bench press 4 x 8
cybex incline press 4 x 8
db incline press 4 x 8
fly machine 4 x 8
lat pull down 4 x 8
cable rows 4 x 8
smith rows 4 x 8
abs (bunch of different ab stuff blah blah)

Day 6 = OFF
Day 7 = OFF

start over....

Well i guess my question is, if you have read this far, is should i just go do the WBB #1 routine, is that a good routine change? Or what would you guys recommend... I really need to mix it up, cuz im really plateauing here... That is not to say i have made some good gains, which i have.

For example: my squat went from just over 100 lbs to 185, and i weigh 153, up from 140 when i started. But its just not cutting it anymore.

Any replies will be greatly appreciated.