Q 63: Assuming you've got at least 3 additional HD from race or other classes, is there any way to qualify for Hellfire Warlock except for 6 levels of Warlock?
4 levels in Warlock + 3 levels in Demonbinder? Buying the Codex Advocare (?) from Expedition to Castle Ravenloft can reduce Warlock levels further, I guess, and so can going for some Dragonfire Adept (although I don't suggest that last one). Some other PrCs are also an option.
If going with a few levels in Demonbinder, be sure to get Mindsight!
Remind me what book Demonbinder is in? Oh, that's the Drow only one.... which unfortunately doesn't help.
Technically true, but read the fluff text for it. Not only are there non-evil Demonbinders (CN), there are ones of other races - they just get shunned and tend to get hunted down, hanged, drawn and quartered by mobs and paladins. So you can make a decent case for being a non-drow one (there explicitly are ones around, just rather rare, outsider Narfell and Thay, for example...).