You might want to look into a 12X 405nm from DTR with driver. It will be closer to 500-600mW, but it will burn quite well and I think it won't be too expensive. That is a single mode diode and has great beam geometry.
Nice to hear from you. I've been trying to post some of my builds, but my camera is too pixel dense to get the photos on a post, so I'm trying to work that out. Take care, buddy.