Well, it’s your call. But for what it’s worth, I enjoyed HtTtHnT when it was running (particularly how the protagonists handled the loss of their secret identities).
Luminosity sounds like an interesting idea, though I’ll confess I’ve never read any of the Twilight books...
Well, you could always try reading the first few chapters and stop if you don’t like it >:D
Luminosity requires no knowledge of nor affection for canon Twilight.