32 channel bulk controller

[magical46]

Hi, I am hoping to build a "Quartet" of singing xmas trees, using the templates from Syncrolight which I have. For me cost is a big issue (I may not get all 4 done by this xmas), so to try and keep costs down a bit I was thinking of using the 32 channel bulk controller but have a couple of questions:-
 Does this controller need just one power supply and if so what would you recommend for 4 trees?
 Does it just require one device number on my network?
 Finally do you supply a housing big enough to house it?

Thanks
Phil