You would still grow in size. Darklight's HVT focuses on muscle size rather than strength, but that is not to say that you won't experience increases in strength as well.

For DB bench press: Pay attention to your form when you are going down. Slow and steady. Don't go down too fast. Do NOT pause at the bottom, go up immediately once you reach your lowest point. Do not go up too fast either, control the speed of your movement. And make sure you go low enough, like, REALLY low, otherwise you'd just be working on your triceps.

Same principle applies to almost every other workout you'll be doing.

And how the hell did you manage DB presses with reps below 5? When I DB press 8-rep max also feel damn susah to balance the DBs adi...

Good body there btw... Good luck!