I'd go it alone. I partnered with my brother twice in my life, to buy real estate. The first time I was 18 and it turned sour. After several years I wanted to sell out to him so I could buy a residence. He paid me back every penny I contributed, and not a penny more, despite the value climbing tremendously in a boom. Should have learned that time.
The next time I gave him a good amount of cash as a silent partner in 6 properties. We had a verbal agreement that 1 of those properties would become mine eventually. When that day came, he turned on his word and refused to follow through. After many months of back and forth, arguing, he sent me my money back. Again, every penny. But he screwed me out of $100,000 at the same time. The last words he said to me were, "I blame you for that mess." Strange use of the word blame I think.
Don't do business with friends or family, they say. If I never have to speak another word to that lying, cheating SOB, it's a win in my mind.
So. What if your partner wants out and you're not ready to buy him or her or them out? Will you be ready to sell? What if you disagree about the materials used in any repairs or refurbs?
If you can go it alone and you are successful, you can be proud of your achievements. If you are not successful, you can blame yourself. For me, unless it was someone I really, really (no, really) trusted, then I go it alone.