Congrats on closing! What to take action, and it sounds like you have a good grasp on your next steps.
1. How important is having separate bank accounts to separate my house expenses from personal expenses? I'm planning on renting out 2 bedrooms at around $600 a month. My PITI will be in the $1300-$1400 range which means I likely won't be cashflowing. I know that rentals should be treated just like businesses which is what they are, but seeing as the businesses would technically be losing money every month, I'm not sure how crucial the separate accounts would be. I could be totally ignorant on this and am curious to hear feedback!
If your plan is to scale and continue to grow your business/portfolio, then you will want to get an LLC and bank accounts. Start treating it like a business. Get organized, develop systems and become efficient. One main reason to start your LLC and bank accounts is to show banks/JV investors/Private money lenders that you're serious and legitimate. Down the road you may need some of the aforementioned entities or individuals to make deals happen. Banks often look at your business /industry history and experience when lending out money for commercial loans. Having your LLC and bank accounts already established will give them proof that you know what you're doing. As a result, this will give them more confidence in lending you money. If you're going to scale start your business now.
2. What rent collection methods or tools have people found best?
For my house hacks I just went with a drop box in the house where everyone deposited rent. Good old fashion check or money order. I'm looking into Cozy.co as an electronic option for my properties moving forward.
3. In general, what tips, methods, etc have people found helpful in making their house hacking successful?
Have a strong lease agreement and be firm with your tenants. They may be friends, but explain to them that this is a business for you, and not a gentleman's agreement. Make them sign leases. I would also add that it would be beneficial for you to chose your tenants wisely. Try to find someone that will not only pay rent, but maybe someone that is like minded, professional and driven. Who knows maybe they'll be a business partner down the road.