20 Ias on gloves or not depends on how much IAS you have in total.
I'm assuming you will have level 20 Fanat at least.

Fanaticism level 20:
IAS Frames per attack
0 % 6
7 % 5
60 % 4

You will need 60% IAS in total.

The ideal gloves would be something like +life, stat, 6% LL, and maybe IAS.

11% LL ring is nice for sure. hopefully with some Str and Life.