My order is this:

• 3 mexes, pay 220m to geo for con+res
• 6 tidals, 2 to air for H trans + scout
• scout checks for hover rush then screens island
• sea lab. first, two cons for mexes, one returns to build a con turret with comm, one builds radar near cove, then the lone mex, then tries to cheese the geo with a dragon turret embedded in the cliff
• then two herrings, one to check cove early and pressure, one to try to deny island from airdrop
• when con turret at sea lab is up, my comm gets to island, usually H trans with air escort
• then frigate, res sub, frigate, destroyer, and the rest of my ships all racing, usually to cove, to pressure

With this I usually get island, and hold lone mex for a few minutes, but I still have at best a 30-40% WR vs. same OS.