Understand that good doesn't necessarily mean expensive. Echoing Ginger - get recommendations. You want a lawyer that will handle things, not stir $h!t up out of nowhere to increase their fee.
Your sister is right - don't skimp on the lawyer. You're husband's sneakiness makes a forensic accountant a reasonable option - esp. since he's been buying gold and hording it like Rumplestiltskin in the dorm room. BTW in Mass. if the partner receiving alimony lives with another person/romantic partner the alimony stops, so he's not making that up out of whole cloth.
xoxoxo
M 20+ T25+ S ~15.5 (BD) BD 4/6/15 D 12/23/16
"Someone I loved once gave me A box full of darkness. It took me years to understand, That this too, was a gift." ~ Mary Oliver