#3 What's the optimum height for these?

[Hyperlite]

We recommend "LED Hyperlite Hero Series" different power according your ceiling height for example:
100w for 8 to 13ft, 150w for 14 to 17ft, 200w for 18 to 20ft and 250w for 21ft or more.

Please feel free to contact us at service01@hi-hyperlite.com if you have any questions or need discounts.

[AidanCallahan]

geometry dash meltdown is not just a game, but a race full of music and speed, where you will feel the excitement from strong rhythms, making you unable to stop until you conquer every challenge.

[dozenbunch]

Operating under challenging conditions may shorten the lamp's lifespan.  Could the manufacturer provide further details regarding the typical lifespan of the product at various temperatures?