Looks like I can't edit my previous post but having measured the the temps they are 56.9C on the heatsink and a few degrees less for the PS. My first thought was to put a fan over the light blowing downwards but in a 60x60cm tent I think that will mess up the airflow. Blowing from the side of the heatsink is the next option but the PS means that really only one side of the board will be air cooled.
The last solution is to separate the PS from the heatsink and then add a fan to it. That would work best but seems a lot of work
I think I will just have to test the options and see. Thanks for the insights
@Jqwerty1 and
@coreywebster