Good luck!
You may have a little difficulty with EU and GU pairs until UK decides to stay with EU, which may never happen. Since the first of the year, UK prime minister has been threatening to leave EU, and this has caused a total disconnect of EU and GU pairs- they are not as correlated as they once were. If you have a risk protection, it may still work for short term trading, like 1 minute charts.

I ran across a grid trading idea that wasn't too bad, that used correlation\hedging instead of direct trading, using EU and GU pairs. The thing is it turned out to be not much different from directly trading a grid idea on EG pair, which has been really trending since the beginnig of the year. Still, it might kind of work, again, on small TF for short market exposures. The only difference from what you are currently trading is to have trades open going the other way, so when the gap between the pairs widen, it is hitting TPs on the way out, not just on the way in. Hope this makes sense, and good luck, again!