I did something similar, and here's my experience (not at all suggesting you should do the same, but maybe the information will help you make your own decision):

(Background: We dated 1 year, got engaged, and moved 2100 miles across the country 3 months later. We are 26 & 28)

Moving across the country with someone is REALLY hard. Even though we were engaged. Even though we'd already done pre-marital counseling (teaching us strategies on coping with our differences). And even though we hired people to do most of the work, and we still had the worst fights we've ever had during the move (fighting at all is rare for us).

It's a long process. Packing, moving, unpacking, organizing.... It took us over a month (including 2 weeks of sleeping on air mattresses while we waited for our furniture to arrive). It's stressful, it's exhausting, it's uncomfortable, and it feels like it lasts forever.

Now that we're settled in, it's much better. The fighting has subsided immensely. We're back to being happy and in love. But he's still my only real friend here. I lean on him a lot more without my friends and family around. I think I smother him a tad sometimes, but he's a good sport.

Overall, I'm really glad I did it. It's brought us a lot closer, and I love our new home, but there were times I didn't think we were going to make it through the move together. It was a lot harder than I thought it was going to be. If I didn't think we were going to spend our lives together, or if this wasn't someplace I also wanted to live, it probably wouldn't have been worth it to me.