Well the fact that it is TTL only is IIRC not a big deal- breaker. Dr Lava P3 driver is analog- afaik, although I have never done it, could be used to mod it to analog. ($45 each iirc) the old driver could still be useful for another laser. If there is a fan or TEC on it maybe one could use it to keep the P3 cool as well.
With a modest analog red and only 100 mWs of analog 532 you could have a nice little RGB set -up.
WHITE LASER!!!
Somebodys going to see this and get a deal and be on there way to something much more enjoyable than just pointers and handhelds. Going to any LEM is a cool thing---- bringing RGB---VERY cool.
my 2 cents--