I did not run any electrical accessories on my 2012 Triumph Bonneville, but I think your stator is good for 25 amps, at 1,000 RPM which would be at least 300 watts.
At, 3,000 RPM, 46.5 amps, which would be 665 watts.
How many amps/watts are you saving with the LED headlight?
How many amps/watts for your planned accessories?
Pending the load answer, I doubt you will have an issue, but you may need to be careful at idle speed.
How good is your voltage at idle? If barely above 12.8 with AGM battery, more load would probably be a deficit charge at idle and some load should be shed for more than a minute at a traffic signal.
However, the closer it is to ideal of 14.3 (13.8 to 14.8), the better is will likely handle accessory load at idle.
If 25 amps is a balanced charge, not a deficient, at idle, then at cruising speed, you may be able to handle up to 20 amps of accessories, plus difference of LED over stock H4 headlight.