the only thing i can suggest is getting fixtures with a chrome reflective surface on the ceiling side.
that way you aren't wasting light lighting up the ceiling, it will be reflected down and you will get a more satisfying and brighter glow.
Actually, for the regular lighting in bars, home theaters and gamerooms, I prefer to light up the ceiling (or edges of the ceiling) instead of having direct light.
The atmosphere is better when it's dim with indirect light.
My place is just a rental and isn't finished unless you call the walls and floor being painted finished.
I've built a pretty nice bar in it though.
It just has bare sockets attached to the joists. I experimented with various low wattage bulbs and found all of them to be eyesores.
Ended up using these and like the result:

Of course, this is in an unfinished basement.
For the blacklights.....
I'm sure you already know that incandescent black lights like what would fit in track lighting aren't real black lights and are just normal bulbs with purple glass.
They won't light up anything that normally responds to blacklight. I'm not sure how the compact florescent ones measure up or how many it would take to get the same result as one 48" tube. I'd do some experimenting first.
I like the idea of painting the rafters flat black.
I'm a bit jealous of the blacklight carpet. I watched a 6x6ft patch on ebay for a year and couldn't bring myself to lay out the money for it.