3-4 days of lifting is plenty as long as you're following a well-designed plan and giving each session intensity and focus. Lifting 5 days a week would be the high end I'd really ever recommend for most people, pretty much regardless of goal.
Recovery between workouts is crucial. Especially if you're trying to add size (please do tell me you're trying to add size?!?), your nutrition will be much more important, so meal planning and meal prep (cooking/packing meals ahead of time) is literally just as important as getting into the gym.
That's kinda what I figured, but just understand that a workout that leaves you feeling like crap when you walk out of the gym don't always produce results, and vice versa.
You'll get a very good workout if you find a well-designed training program from a decent coach, follow the plan to the letter, and trust the process.
I know. I checked your profile, that's how I knew your height and weight and why I suggested the program I linked to. Start with the bodyweight plan (seriously) and then progress to the 4 day a week routine.