How to break up?

In January I (F21) will have been with my bf (30)for a year. Back in April I moved into his house because I was spending all my time there, it was free housing, and I was in love and really felt like he was the one. My name is not on any of the bills or anything, I just moved all of my clothes and put all of my furniture from my apartment into my parents basement. Things were going well all summer, but recently I’ve just felt myself distancing from him. I’m set to graduate with my bachelors in a week and start my full time job along with grad school in January. I feel like our age difference has begun to show more and more with what we are wanting to do, I’m looking to travel and explore and enjoy my 20s and he’s ready to settle down and have kids. I’m not blaming him for feeling this way, it’s totally understandable based on his age and what he’s already experienced, I’m just not ready yet and I think it’s caused us to grow apart and I’m ready to break up with him... I’m just not sure how to do it.

I’ve found an apartment I can afford and the landlord is being really flexible, told me the deposit I put down can either go towards December rent or January rent, just depends on when I move in so there’s no financial advantage to my timing.

I’ve spoke with family and friends and they are ready to be supportive and help me move all my furniture from my parents house (approx 30 min away) and my clothing/other belongs whenever I choose.

I’m looking for advice on timing: I’ve thought about moving all my furniture and less obvious stuff (summer clothes that are storages in my bfs basement, etc) one weekend and then packing up my clothing, breaking up with him, and then walking out the door whenever our conversation is done.

Some friends have told me to wait for a weekend when he’s gone (frequent with work) and move everything and then come back to have the discussion... and then leave. Or some say to break up, then pack and then leave.

Edit: I meant that this would be spread out over two weekends. One weekend moving stuff he can’t see/wouldn’t know about and one weekend moving stuff that’s in his house and that he would notice is missing.

I think this break up will be heartbreaking but mature, I don’t expect us to fight or yell, so I’m not worried about my safety when I go about this, just not sure what order is best??