Not one to bother you but after looking at the landscape in FTE, I think staying put and using Double Team is not as wise of a move as I initially thought. I think going with Plan B might be the best option and in that plan means moving after Gothorita and using Shadow Sneak from G7. The Sitrus Berry will cover most of the Pursuit damage in doing so while your attack ought to deal ~30 damage since Ghost does x2 to Psychic. Alex will then move to D8 and use Bite(Dark x2 on Psychic) that hopefully does at least 16 if your attack does 30. Then Waterproof moves to F7 and finishes Gothorita off with Dragon Rage. As long as you and Alex combine for 46 damage, Gothorita will fall. Robin should single handedly KO Nidorino and Dartrix should fall to Glacier's hand, leaving Aipom, Liepard, Seviper and the boss(Simisear).
By moving, you eliminate a nearby enemy and also avoid getting hit by Simisear who used Nasty Plot in prior Enemy Phase. I suspect it's going to swap places with Aipom up north and in preparation for this, I have Freesia and Susato moving to form a diagonal wall on our west flank. Lily will be behind it ready to attack whatever is nearby. If it turns out to be Simisear, I may opt to have her use Sleep Powder to buy us some time as we take it out or go after its Allies.
Needless to say the next few rounds should be quite explosive and decisive. Feel free to chime in.