Hello, I bought a house with an older concrete pool. I light had a leak and was shorting out. The fixture was not in a niche, it just sat in the pool inset. It was a 500w halogen bulb. The fixture was 60 years old. What do you suggest I need. The opening is 10 inches in diameter and is 20 inches deep. Do you suggest LED. I would like to be able control the light remotely if possible, because the switch is down a hill about 50 ft away in a pool house. The light wire only needs to be 8 ft..