There are a lot of small business blogs out there. However, there are still a lot of unique propositions that are not adequately covered which I think your blog can.
Based on the description of your new business, I would recommend content that are based around solutions providers for small businesses. It can be interviews with small business owners on how they choose or what they look for when shortlisting certain types of service providers. On the other hand, you can also conduct interviews with service providers regarding their services, work flow as well as on the reasons why small business owners have to choose them.
Of course, there are tons of content ideas that you can apply such as a moving trend in different solutions provider circles (accounting, tech support, offshore, etc.), authoritative content (tips, tricks and guides) by solutions providers and more.