Best bet is to build it yourself.
Others will give you what worked for them, but every laser module is different.
Example: I had a 2w laser that could not cut even half way through 3mm plywood in 10 passes at 100 speed. Another person had a 2w and was cutting through 3mm plywood in have the amount of passes.whas it the wood? Was it my laser?
Every wood and laser is different so starting one for yourself would be best