Help with EQ Slayer Build Please

Here's my build. Character is Brokeback_Sauce. I'm pretty sure I set viewing permissions up properly. Of course this is based on Norse's guide.

I'm not really having problems with him. I've beaten Atziri a couple of times while screaming at my old slow reflexes fingers to move faster.

I feel like I have a decent balance between offence and defence. My tree is a bit heavy on the offensive side but I run enfeeble and chains on most maps.

Here are my questions:

1. Which do you guys think is the right way to go? Endurance on leap or fortify? I have fortify support in my 5L (soon to be 6L) for EQ. I figure doing this makes endurance on stun kind of pointless on my boots but the reason I went fortify for my main attack is because while I could put a big damage dealing support gem in there instead, I don't have to often leap to keep 8 stacks up.
2. CWDT mystifies me sometimes. I don't think that I have ever seen my Vaal Lightning Trap go off. Immortal call works fine though.
3. The bloodlust support gem says "cannot cause bleeding". Does that mean that if the supporting gem(s) is a bleed attack that attack doesn't bleed? That would be fine because my bleed comes from my axe but if it's cancelling my axe bleed too (sure it doesn't) then this support gem is kind of pointless. Wiki is oddly worded.
4. Adds physical damage to attacks mystifies me. On my totem guy I add a tiny amount of this to one of my rings, my tooltip number skyrockets and suddenly my totems one hit god. Should I do that here too? It would be tough because I had a hard time getting my resists.

Thanks guys!