Furthermore it is worth taking itno account that you want to short the GBP against the CHF (which I agree with) as the sterling has recently been relatively weak (weaker than the USD, but stronger than the CAD). The CAD is actually the last currency that is weaker than the GBP; all the others got the upper hand. But this ccy is currently oversold, and the momentum cycle may be a factor that will weigh on its strengthening in the coming trading hours, so the lower support level should hold at least in the short-term.
For example, you can determine the relative strength of a currency by analyzing the charts of their futures charts, which are the chart of the euro, US dollar, the Canadian dollar etc. Check out these major currency futures charts first, here on tradingview.com: E61!, DX1!, D61!, B61!, A61!, N61!, J61!, S61! and let me know, what you think.
What I showed you is the way I go, but the very tools I use are far more complicated and self-made to share publicly. However, I will do my best to help develop your strategy with your own tools.
What is worth mentioning is that I found that the long-term strength/trend matters more than the short term-strength or trend. Until they fall out of balance, reach certain inflection point, after which the relation may be inverse.
What matters are both the strengthening, (the tendency of a currency), and the fact of the current level of relative strength. And I focus on the strongest pairs sorted by the relative strength of their currencies. For example, currently the four strongest pairs are: NZD/USD EUR/NZD AUD/USD EUR/AUD, because the strongest ccies at the moment are: NZD, AUD and the weakest: USD, EUR. But I specialize mostly in the first two of them, the best two. I collect stats on them and my strategy is only following their trends. And what is also a valuable information is that those best ones, even after they stop being the best, still keep on trending for some time.
So your findings are pretty much consistent with mine. JPY is neither strong nor weak now, I disregard it now. Long NZD, long AUD, short USD, short EUR. That's how trade now