He guys.

So for my workout ill be do upper day and lower day twice a week.

I just want some meat on my body so, is it optimal to do one power day and one 'hypertrophy' day or like I explain underneath this?

For example: Upper day 1

T bar row 4x3-5

barbell bench press incline 4x3-5

military press 4x3-5

dumbell bench press decline 3x10

Bent over row 3x10

Face pulls 3x10

EZ curl 3x12-15

end off with some side raises for a few sets or a tricep exercise?

Upper day 2

Bent over row 4x3-5

dumbell bench press decline 4x3-5

Military press 4x8

Barbell bench press incline 3x10

T bar row 3x10

Lat pulldown 3x10

Tricep extension 3x12-15

end off with some side raises for a few sets or a tricep exercise?

So kinda giving the main compound lifts a hypertrophy day and a power day for optimal growth in strengh aswell as size.

Please give me your opinion!

Here's the simple breakdown:

Muscle Gain - 8-12 reps

Strength Gain - 4-6 reps

To gain muscle, you need to have VOLUME in your workout. It looks like you cover most bases here, but volume for each muscle group is lacking. You might be better off going into a three day split at least, in order to hit each muscle more. At the moment, you only have one exercise specifically targeted to your shoulders each day.

And as you say, it might also be better to have your first day dedicated to power/strength, and the second to hypertrophy.

What sort of results have you seen from this type of training?

How many days do you give yourself for rest between upper body days and between lower body days? A few things you could definatly have the first day of upper and lower 4x6 or 5x5 for strength and the 2nd days 3x8 or 3x12 for hypertrophy. You would set it up like this so your don't strength train twice a week and put too much stress on your body. Also I don't recc doing any overhead press more than once a week due to the amount of stress you put on your shoulders and you don't want to blow them out. You should add side raises and rear dealts in there for the 2nd day. I recc having a tricep exercise on each upper day perferably dip, close grip bench or skull crushers to really hit all 3 heads well, you will get plenty of other tricep work from your presses. I agree with Jordan on a 3 day split, you may want to do a push/pull/legs routine.