Hella's are junk...160 and only 230 lumens, typical halogen is 800 lumens, and remember you will have a different color light so led will look dimmer to your eye at first until you adjust. I have a big thread on this site about all of the led spreaders on the market currently. I've seen most and most are jsut ok. Only 2 I would consider out of the bunch, Lunar"Polaris" LEd ...BOE marine carries them online but they aren't out yet. They are 800 lumens, and about 1 amp draw per light, opposed to 4.5-4.6 for a halogen per light. For your size boat they should be ok, and are relatively reasonably prices if you get in the first order. They have a few pictures online, not a ton yet. I am going with VisionX LED spreader's. I fish at night offshore and need lots of light to prevent blind spots and to attract bait, the VisionX light's offer more options, but in the end cost more. For visionX you need a 1 as the last number in the XIL series to notate a flood beam, the XIL-40 is 720 lumens, XIL-60 is 1440. I am purchasing mine monday and will have pictures of them comparing the LED's and Halogen's by the weekend of the 21 for sure I am going to take pictures before and after the install to compare, as well as a side by side of a single light.
As for underwater's, Chris at coastal night light's has a decent affordable light, but get a double square, don't skimp out the single's aren;t that great. Ocean LEd amphibian's are another option but cost a bit more, but Ocean LEd has proper insurance incase they ever malfunctioned, Chris I'm not too sure of how that would work, you'd put him out of his house and be lucky to get a fair settlement, something I'd be cautious of personally. Abyss has a decent lower end light as well. As with anything, you get what you pay for.
http://www.shadow-caster.com/
Here is a new company I just found, have not seen them in person, but they look great in the picture's. Would love to see them a few buck's cheaper though. Persoanlly, I do not think Chris's lights shine far enough, many love them but I am used to being on big sport fish boat's with better light's and they do not compare. The bigger amphibian's give off a better quality light. Persoanlly I'm not a fan of a lot of little LED's, from my experience they burn out more often, seen too many of Chris's first gen underwater's with a bunch of light's burned out. good new's is there are a ton more to stay lite, but they shouldn't be burning out period, he has gotten better with that though. Bigger brands use less, but more powerful LED's, they do not burn out nearly as often, but if one does you notice it more since there are less and they were very powerful. If you will only use them on occasion and only need a little light, Chris's light's would be fine, but if you will use them often and for years to come, but better quality.