Your readings seem high to me , but , I only have what my system produced to compare . And , that is likely not optimum .
If your readings are correct , the headlight coil is producing about 162 watts and about 58 watts to the tail .
That should be way more than you need . Maybe enough to burn 6 volt bulbs .
I wish I could be more help . My bike is currently waiting to have the motor bearings replaced . I hear a whir on deceleration . I think it's either the crank bearing or the big end rod bearing .
Anyway , I won't be running it for a while , so I can't provide present day output readings .
Pete .