I would say keep going while you are still growing.
There isn't much need to change the plan if you aren't hitting any plateaus.
Aslong as the weights keep getting bigger and the t-shirts keep getting tighter, stick with what is working.
You can add some isolation exercises, or just add different compound exercises, but maybe work those in by dropping rows or something.
Like maybe every 2nd week, you do isloations instead of rows for a few months.
Play around with it. The idea though, is to keep moving forward, having an idea of how sore you are and how you recover.
You don't want to pile on a bunch of isolation exercises that are more about fine tuning rather than adding mass.
Also, squats. I just assume you are doing them. Doing heavy weights on your legs, releases the most amount of Growth Hormone, that helps you whole body.
Also, not eating much fat before you workout, helps too. You will release more Growth and have higher Test ratios, before you consume fatty foods.
I like to workout after my first meal of the day, which consists of no fat at all. Course that's not always possible......but you want to limit your fats, till after your first workout and recovery meal.
Again, this is probably sh)t a lot of people don't worry about, cause they got the genes to just grow no matter what they do.
And if you are juicing of course, you don't worry about your hormone levels! lol
No thanks man, it's motivating to me, just talking about this shit. It's like, workout porn or something....i want to go lift something right now.