As far as I can tell the gear look comes from:
A) Just being genetically gifted like the IFBB pros of the world (and similarly built people) and blowing up as soon as you touch some gear. Very rare.
2) Bulking a shit ton, cutting about half of it, repeat until mass is achieved just like natties.
Someone luckier than I may chime in but this seems to be the only routes. You can achieve this on just Test but other drugs help of course. I'm not sure I can give a hard number for the bodyweight figure to aim for since I don't know your height so I'd say look up the numbers that will give you roughly a 28 FFMI score with the body fat range set at 10% and aim for that. For the average guy at 5'9 you'd want to be around 210lbs at 10% bodyfat to have an undeniable "He's on gear" look. Every pound above the 28ffmi line adds noticeable mass and when/if you hit 30 on the scale you're basically in IFBB pro territory.
You just have to make peace with the idea that you will not look lean for a bit while bulking, and this step is what keeps a LOT of guys from getting where they could potentially be. "But my abs! But I'll be fat!" etc this type of thinking will keep you from getting big. Plan a period of time where you're gonna forego being sHrEdDeD to pack on size, then later when you cut back down you will reach the same level of lean'ness but with a shit ton more muscle mass on you.