DIY can be awesome.

I have a friend who's building an entire car exterior to learn autobody and create something totally unique. That's a DIY...

I don't think that landscaping thing is going to have a good beam pattern for use as a headlamp.

The LEDs and whatnot are the easy part. What's difficult are the housings and optics. Access to CNC mills or exceptional ingenuity are big pluses.

I want to make a DIY 2xP7 lamp with basically dinotte 400L housing/design/optics. unfortunately, what makes dinottes nice is what prevents this from working... you can't make precision housings and optics without lots of money, and you can't find analogues in mass production for any thing else, especially not outdoor landscaping.

superbrightleds dot com sucks. they're really overpriced imo.