Troubling housing situation

My SO and I are hoping to move in together soon. To cut a long story short here are the facts:

- I live with my parents in my brothers old room (he studies in another state)

- My SO lives in the country 3 hours away and will be done with his work there in Dec

- my brother will be back from interstate in November by which time I have to move out of his room

- SO and I are going on holiday from Dec-Jan

- when we come back in Jan I’m straight back into uni with my final unit, so I can’t afford any distractions.

Now the dilemma is, I want to find a place now, furnish it while SO is away, organise all bills and have it all done and dusted before our holiday. SO wants to wait until after we get back because he wants to delay having to pay for rent. I can’t afford an entire house on my own.

I keep looking at houses and getting excited for the future and budgeting everything and presenting well thought out options for places to live. SO knocks me back every time. It’s causing arguments. It’s disheartening. But after our holiday we are essentially homeless and I don’t want that stress on top of everything else. So I want to get a move on ASAP. Any ideas for a good compromise? Moving stresses me out so much I had a breakdown earlier in the year because of it. I don’t want get to that point again. Is it that unreasonable that I want to find a place early?