Shortcut to Size or Shred? [Help Pls!]

[manuelgranda1]

Hello,

I have decided to start workout routine to get in shape for boxing. I want to box at around 160-170lb mark. I am 5ft 10in., 160 pounds atm, with rougly 21% body fat. I need to cut this fat down but also would like to build muscle. I have spoken with a few people but there seems to be a mixed feeling of what I should do. Some tell me to do the shortcut to shred, others tell me to do the shortcut to size program then do the shortcut to shred. I am looking for some suggestions from anyone that may know what is best for my current situation.

Body Measurements:

Male
Waist size at narrowest point: 34 in.
Waist size at your naval: 37 in.
Hip size at widest point: 36 in.
Thigh size at widest point: 23 in.
Neck at narrowest point: 15 in.
Biceps at widest point: 12 in.
Forearm at widest point: 10 in.
Wrist at narrowest point: 6 in.
Enter your weight: 160 lbs
Select your height: 5'10''

So yea, atm skinny arms, fat belly lol. Should I go straight for the shortcut to shred program? Or should I do the shortcut to size. I have already ordered the full supplements for the shortcut to size program, just sort of confused which one to start on :/

Any help really appreciated! I can provide more info if needed.

Thanks!

[manuelgranda1]

Any suggestions?