I have Econ 2X03 with Hannah Homes and I was wondering if the textbook will be useful to have. I managed to get an 11 in microecon without it, so I wasnt sure if I would be able to pull off a similar mark without it this year

2X03 is a lot harder than the first year Micro so it definitely wouldn't hurt. To be honest though, at the time I remember thinking, "This textbook is awful why did I waste my money." If you plan on going to each lecture then you can get by without it (and still get around a 10)