Should there a need to make a choice, stay away from bias is step 1.

Whether "SME" or "Family Law" you can based on which one can generate higher revenue (with shorter cash flows turnaround) within the first 6 months. In this way, you can use the earned cash to reinvest in marketing and resources for more sales and expanding to other segment.

Why 6 months and not 12 months? This is my assumption that you need about 6 months to test whether you making a good choice or not.

hope the above helps