Seeking neck item advice...

Ok, I'm stuck and looking for some help on two gear decisions.
1st:
I currently have two neck items I'm carrying around and I'm not sure which I should be using.
+ = 160hp/250mana, FT5, 20% Detrimental Mana Preservation (67)
or
+ = 200hp/265mana, FT3, 3% Dot Shielding
My thoughts: The FT loss is a non issue at the moment since I don't have the AA's to go past FT 15 done yet and am over the cap already. I have 15% Mana Preservation (70) from the aug on my boots so I don't totally lose Mana Preservation if I switch. The hp boost and 3% Dot Shielding look very tasty to me. I lose a massive amount of Fire Resist on the switch (40) and would drop my Fire Resist below 250, I'm not keen on that idea. What do you think I should do?
2nd:
I have the mold and parts for my 2nd Kanleku's Bracer in my bag. It is superior in every way to my except that it is my Extended Range Item. Should I make the swap now and go without extended range for a bit? If so, what extended range items should I be looking for (Guild is working Tacvi/MPG Trials). If not, should I be swapping them (huge pain in my ass) or just waiting to find Extended range on another slot before I upgrade?
Thanks in advance.
1st:
I currently have two neck items I'm carrying around and I'm not sure which I should be using.
+ = 160hp/250mana, FT5, 20% Detrimental Mana Preservation (67)
or
+ = 200hp/265mana, FT3, 3% Dot Shielding
My thoughts: The FT loss is a non issue at the moment since I don't have the AA's to go past FT 15 done yet and am over the cap already. I have 15% Mana Preservation (70) from the aug on my boots so I don't totally lose Mana Preservation if I switch. The hp boost and 3% Dot Shielding look very tasty to me. I lose a massive amount of Fire Resist on the switch (40) and would drop my Fire Resist below 250, I'm not keen on that idea. What do you think I should do?
2nd:
I have the mold and parts for my 2nd Kanleku's Bracer in my bag. It is superior in every way to my except that it is my Extended Range Item. Should I make the swap now and go without extended range for a bit? If so, what extended range items should I be looking for (Guild is working Tacvi/MPG Trials). If not, should I be swapping them (huge pain in my ass) or just waiting to find Extended range on another slot before I upgrade?
Thanks in advance.