I went with cool white too, I love it. For the instruments ,you said it, you have to use 360 degree bulbs. I used the hp 5 in green, they were 5.95 each, not too bad because the most you will probably need would be six, if you're doing gauges too. Couldin't believe how good they worked. A while back I read on here to use sylvania 2825 instead of 194. It helped a lot ,but these LEDS just really out performed them.I did pretty much the same, though I went with the cool white which doesn't look sa good as yours. The things I would do different are color and getting the more expensive but 360 degree bulbs for the dash to get a little better coverage.
can you post the bulb numbers you used for your dash? I have to dig up the ones I used but I know they were the much cheaper ones.
You probably could use those just make sure that you measure good before ordering. If you didn't like them you could send back for refund and choose another. I've never used a spider so I can't say for sure, but they might light your lenses unevenly. Maybe,maybe not ,not sure. The ones that I used are the 1157-x3X1w 3x1.3 Watt High Power LED BAY 15D Bulb Amber. They are sort of like spotlights, I thought that they might work well at dusk for driving lights before you would normally use your headlights. They flash really bright also. They have a lens that you can remove or leave on that changes the light angle from 100 to 130 I think.Did you use these for the front turn signal/parking lamps?
30HP-LED BAY15D Spider Light
Also, could you please post part numbers for both of the elec flasher units?