To expand on my point so you don't think I'm just being an asshole:
Lets say your body is designed to get to a leanish 240 over say 4 years. Now you look up all these numbers and get it in your head you NEED to get to 270. You are going to blow past the soft 240 and eat yourself fat up to the 270 and fuck up a good 6 months of quality gaining time spent doing damage control.
I will say however, depending on your frame, you are going to need a shit tone of mass to feel "filled out", lol. I'm your height and feel undersized at a soft 250.
Just pay attention to the mirror and those around you who have a clue. When dudes you look up to at the gym start telling you that you "got big" or "damn man you blew up" you know you're on the right track.
I know this isn't what you wanted to hear, and I know it helps to put a number on a goal, but if you need to focus on numbers, which I get, focus on adding 50-200lbs to each one of your 8RM's for each lift and eating your body weight in protein a day.
Oh, welcome to the boards btw.