So I started my trading journey some time ago with a single pair but am considering expanding trading capacity and capital so am wondering, should I continue trading on a single pair but with large capital, or I should trade on double pairs.
With time a trader is able to identify more than one trading pair to be profitable. So it is defenitely recommended, but do not over do it. Dont end up having to analyze more than what you can digest. Sick to some pairs that you have found to be profitable over the years and keep a lookout for the trends.
This is possible after having gained some experience over years. If you are newbie, you might want to real time trade your previous pair while paper trading the possible next pair. Then you can be satisfied whether your assumption was right or wrong.
Make sure that the first pair you started with is still within your predictable limits. Dont attempt to use a new pair just to cover up losses made in another pair.
Do I need your sincere advice?
Actually you dont. What you do is your own decision.