The little white light is called a "City Light". It's a Euro thing. Connect it, er don't.
The blue light is your high beam indicator. You don't need it if you plan to keep the stock light panel. The hole for the lens makes a dandy spot for a headlight cutoff switch if you don't need the light.
The universal cafe brackets are stouter than you'd think. You might give them another shot.
Here's how I dealt with the stagger. I put the brackets in a sheet metal brake and squared both sides off identically between the first and second holes. It's been on there nearly four years now and I don't exactly baby this bike. This is an early Goldwing light, probably at least as heavy as yours. You can't see them but there are o-rings under the brackets to protect the chrome on the forks and cut down on vibration. I recomend putting something in there to keep them from eating bulbs. My first solution was just a section of bicycle tire. Worked fine: