Just food for thought: you likely won’t end up looking like either in those pictures, but don’t think of that as a bad thing - like at all. Your muscles will develop however your genetics tell them to, and you very well could find yourself bigger than either dude you’ve put up there. It’s not a bad thing to have a ‘goal physique’ in mind, and I approve of you re-envisioning what that goal may end up looking like; this is something that most people don’t pick up on until much later in their journey (sorry, there isn’t a great chance you’ll end up looking like Arnold’s body double).
All that being said, your goal of being “muscular and functionally strong” is 10/10 and always achievable with effort.
On a slightly different note, I heard a really valid argument from Mike Isratel (youtube gains guru) as to the best way to make long-term gains from beginner to advanced… He recommended starting off powerlifting. Reason being: you’re still going to put on muscle for sure, but you’re also going to have an extremely strong foundation of movement patterns that will effectively be your base for all other movements (deads, squats, overhead press, bench, etc.). Once you have your foundational movements locked down, you could then move over to more hypertrophy focus - or bodybuilding. Using the strength and technique from powerlifting allows you to push yourself harder on a lot of exercises that could otherwise end up causing injury if your form failed.
Anyways, for when you go back to Uni, going about a powerlifting approach may be a great option to keep your exercise duration shorter while also building towards the future (and your goals). If this doesn’t appeal to you - feel free to ignore it, I’m just some dude on the interwebs anyways =). Regardless, I’m impressed with your level of dedication and getting off on the right foot - it is seldom seen!