Noob question about my gloves

I'm new to poe for the most part and was confused about the double affix from the masters.

Right now I have these gloves

20% increased melee damage - implicit mod
16% increased attack speed
233 accuracy rating
86 life
30 chaos res

I added 73% armor via crafting with the masters but I can't add another affix? I thought I should be able to add two. In the end if I can't add dual crafted affixed, are these gloves worth burning an exalt?

You can only craft more than 1 affix if you have elreon's "can have multiple crafted mods" which costs 2ex, is a suffix, and needs level 8 elreon. However, your gloves have 3 suffix already (ias/acc/res), and its generally not worth multimodding gloves
As to whether its worth yolo'ing, its up to you. You have a chance of hitting hybrid life/flat damage, but there's quite a few rip mods so I wouldn't if you have other areas in your gear you can focus on upgrading