I think the problem is that while we all say 'only you can know what's right for you', you are finding it (understandably) impossible to say how you will feel after a termination, or with a baby, because you don't yet have experience of either.
I was in the same position. My instinct was leaping for joy at having my first baby. And all I wanted to do was protect her. But my head and most of those around me were saying omg how can you have a baby at 22.
All you can actually do is as much research as possible about both options, then take a view.
My thoughts on your situation are that you are in a strong relationship and have each other's support. This gives you a key foundation for whatever you do, which is very good.
If you have the baby, you will have each other to help you. You can pull together to sort out the new practicalities.
Sources of support appear often once the decision to have the baby has been taken, or when the baby is born. Parents and family. University. Local resources for young parents. GP/health visitor.
If you terminate, you will immediately have a joint burden of sadness. This may affect the relationship. You may turn to each other in an attempt at comfort, but it may alienate you from each other, as you deal with feelings of failure and reproach. You can't really know how you'll feel.
Look into abortion regret. Look at the threads on here. So many have been in the position you are now.
Sadly this isn't like buying a car or choosing a holiday destination. Some reviews say fine, others say disastrous.
The bottom line from my experience and reflection is:
You know both of you will absolutely love a child. You know practicalities will fall into place and you'll get through somehow. It's highly unlikely you'll look into your child's face and have any regrets.
You can't know how you will be affected by potential regret and sadness if you terminate. But if you've had any experience of losing a person close to you, all I can say is that the grief is peculiarly painful if you never even got to see their face or smile, or see their eyes light up when they see you, or have that precious gift of helping them to learn about the world.
You are weighing up practicalities like studying, timing, money, housing with your heart and life.
Only you can say what is more important, more precious, and less possible to find a way around.
Can you juggle practicalities?
Yes.
Can you bring someone back once gone?
No.
That's your bottom line. Don't be afraid of things you can manage. Do be careful about something you won't be able to change once done.
Just have your eyes open, whatever you do. That's all you can do.