Why are you asking for opinions on this now when you're not going to university for the best part of 11 months? There's no right or wrong answer to this and it depends on what is right for you. Statistically your relationship isn't likely to last, but then if you break up prior to university it's difficult to go back on that. If you're unsure then try the long distance relationship, and then if it doesn't work or you find yourself wanting the singe life, you can break up then. But you have no idea how you'll feel about that in 11 months time, so it seems strange to push yourself into a decision now. Honestly it makes me think you're more keen to go down the breakup route than you'll even admit to yourself, but I might be wrong. Either way, do what's right for you.
To give anecdotes, my wife and I met during the first week of uni and are still together 20ish years later. We both admitted to each other that we were curious about the single life at university, but never enough to break up and that's all a distant memory now. We know other couples who got together early at university and are still together. We know others who broke up. We know people who were single after uni and got together with their current spouses soon after, and others for whom it took longer. There's no hard and fast rule. It's different for everyone. Finding out who you are personally, spiritually, sexually and however else can happen in a range of situations, including later in life within a relationship. Walk your own path.