Navy suits are better to be leaved alone! Btw, the waistcoats you selected have a different weight and texture of cloth, so it will look quite odd in reality.
Frankly, IMHO odd vests are better with sporty suits (Glen plaid, houndstooth, etc) rather than business suits, or with sport jackets and slacks. But, if you want you are free to try .
/My 0.002 euros
Some of my 2 cents:
- Avoid like hell any shinny suits or small patterns (be careful even with mohair, studio lightning can be very crude), try to find a fabric that "drinks" the light;
- Avoid linen, the creases will be too visible;
- Avoid brown, it looks like hell with blue light (which is the main spectrum for studio lights these days)
- Avoid white shirts if you are pale skinned, you can look like a corpse - a little bit of tan and some make-up, mostly in the T...
Cut your carbs - eliminate for 3-4 weeks, the hunger will disappear. Drink only water, keep a good level of minerals, eat a lot of fiber (broccoli, cauliflower, salad) and protein. Avoid like hell sodas or any form of carbonated drinks (including "diet"). Monitor your blood pressure, do cardio - strong levels of workout will make you hungry - start working hard after your metabolism is settled.