Is zorro appropriate for a non programmer attempting to trade XAUUSD using momentum breakout on lower timeframes and limited risk?
You will become a Zorro programmer in no time if you follow the tutorial which starts here. Definitely make it a point to play around with the scripts:
https://zorro-project.com/manual/en/tutorial_var.htmBased in UK and subject to FCA margin rules would lowered leverage (30:1) hinder trading with zorro?
No, that will not be a hindrance.
Does zorro's base interface and direct API to fx trader Oanda for instance illiminate the need to use mt4 or mt5?
Assuming the API is available to UK users, yes, it will eliminate the need for MT4/5. In general, direct API connections are superior to bridging with trading platforms.
