I attach a .xls file how i will connect each led on a cat5 cable (please bare with me since i'm really new to electronics and led's and stuff like that), and since wire length is different from first led to last with maybe lets say 8-9 meters i suspect the brightness of the led will be different right ? will it help if i will use different resistors ?
Using resistors with LEDs is a poor way to regulate them. LEDs should be regulated by current, not voltage.
Chips like the TLC5916 or TLC5925 will regulate current so you don't need any resistors and cable length, etc. simply aren't an issue.
If you want PWM control of the LED brightness you can use a chip like the TLC5940.
also can i power all this from arduino 1pwm pin for each shift register?
No. The amount of current (amps) provided by Arduino pins is very limited (only about 30mA).