I think it's a really good idea. Weed does have spiritual qualities and it doesn't interfere with other religions. Maybe in 10 years, I'll be a minister in a cantheist church...
From what I've seen, the paper towel method works better.
I think you're going to want another light or two if possible during the flowering cycle as long as you can keep everything well ventilated.
I don't know much about lowryder specifically but if you did 12/12 from the start, it would grow for like 2 weeks and then start flowering. I don't think it would get too big unless you were dealing with clones.
I would say just use 6-8 cfls and cover the inside of the cabinet with mylar.
I doubt you'd be able to keep the cabinet the right temperature using the HPS unless you have a lot more fans.
Check this one out https://www.rollitup.org/do-yourself/51417-diy-4oz-minimum-yield-grow.html
While toking: Lil' Wayne, The Postal Service, Sufjan Stevens, Pink Floyd, Aphex Twin and the Decemberists. I was listening to Sleeping Lessons by the Shins last night right after I finished smoking, it was amazing.