Muscle Mass Gaining Problems

My metabolism is kinda high and my job is also pretty lame, I don´t have a physical demanding job so yes, I get to sit still quite a lot but try to at least daily have a decent walk.
My ambitition is to gain some muscle mass without too much bodyfat, it´s not comfortable to look like and feel like a seal when you claim you workout at a gym and your buddies look strangely at you. And then ask;
"-You workout?"

The goal is to put on some mass, I´ve been training since 1996 and more serious the last 2-4 years with supplements and a drug free training. My bodyweight is 201 Ibs at a height of almost 6'1. And, my metabolism is kinda high and my bodytype is like ecto-endomorphic...
My daily macronutrients is following (all percentages are not 100% accurate but on a good day they´re pretty much like these);
Protein 27% about 225 gm
Carbs 52% about 440 gm
Fat 21% about 30-40 gm
My bodyfat level is not measured but I guess it would be around 14%- maybe higher, you can slightly see textures of abs when flexing but there´s also some sights of the well known 'handles of love', u know? So what...it´s muscle mass gain, right?
And no, it´s not troubling me with having the actual 'not so big love handles' at winter time when I am anyway wearing a T-shirt on.

The days when I go below 300-350 gm of Carbs I get all wuzzy & fuzzy and don´t know what I am doing, I guess some of those who diet before contests get those feelings? Like being a bit drunk?
I do know some of you recommend higher Protein intake, like 400-500 gm which is really high and I haven´t figured out where I could get so much Protein from, without robbing myself. Lack of money, yeah, haven´t we all?
What about the fat intake, higher it or lower it? I sit quite a lot at my job? Opinions?

What I would like to know is am I doing it right or wrong?
Can I expect a slow muscle mass gain or can I make it quicker somehow? Without ""the"" supplements"...

So if you´ve read this far, gimme me some advice what to think of and what to do to make progress?

well, how is your post-workout shake?
how do you split your meal?
do you eat before bedtime?
do you have enough sleep?
how is your training routine?

answer those, maybe we could give a bit more help...
but, carbs intake sounds good, try to get a bit more protein, ~280-300g , and try to have a bit more healty fat...

maybe you can try taking affordable supplement as creatine or r-ala...

Bump!

I like your macro nutrient breakdown... it's the same as the one I am following for my 'bulking diet' :) Where are you getting your carbs from... the type of carbs is more important than the amount of carbs!