Current 3 family with zoning options for 8 units instead.

I own a 3 family in the metro west area, 18 miles outside of Boston, Massachusetts. With the property size i have, the town will allow 8 units without any variances. the property is 310 feet long by 79 feet wide. The current house sits at the front of the lot, next to the street. Where should i start with even taking on this kind of project?