Moving as the dollar weakens just means you'll blow all your money buying your new currency. And a strong currency is not really a guarantee of much - it just means that there's a bigger incentive to buy stuff in dollars or yen or whatever else is weak compared to the euro zone.

Better to try and "move" your product rather than yourself. The exchange rate means it will be easier to sell overseas while the local value of your money (ie, to buy groceries and pay your rent) will be largely unaffected. Not that London is a bad place to go, and the majority of the UK's trade is (iirc) with the Eurozone so that might have a buffering effect on the economy here.