Y'all did a huge mistake.
Your currency will take years to recover, at the very least 2 years since that's the time it's going to take to negotiate your exit, and if the negotiations are as transparent as the negotiation on the free trade deals between EU-Canada and EU-US, boy the instability that will ensue
Plus the EU won't play any games for your asses since it will want to discourage any member to try to leave as well
Good luck !