That LED array looks like it would really light things up. Might just be what you are looking for. The lens idea was for some distance and intensity if you are only using one or two LEDs.

Laser alignment was a ... very difficult.

The laser and sensor are mounted on 2 inch heavy walled pipe cemented into a 3 x 3 x3 foot chunk of concrete. We did/do the alignment at night with a 4 x4 foot piece of plywood to start with. Every once and a while with the change of seasons and all the earth quakes we have here it has to be re-adjusted. At that distance the laser spot is couple of inches in diameter so there is a little forgiveness.. But I should build a bigger target.