Hookay, I'm starting to see some of the problem now. First off, gear level isn't as precise as they'd like it to be, and with your current gear, Woh Gates might be a tricky zone for you.

First thing you're going to need to do is upgrade your h2h. Even though Delve clears are tricky, there are other options. The h2h from sparks is probably better thanks to their latent activating at less than 1000 TP, meaning that you've got 63 Acc just from that slot alone. However, as possible, you're going to want to upgrade to a h2h with a better "Hand-to-hand skill," because the skill on weapons isn't a direct skill and adds a lot more acc and attack than one would think. You're going to want to get one with 242 ASAP. I recommend doing Rala/Cirdas Alluvion Skirmish to get some Ohrmazd, which you can augment for some nice bonuses such as Acc, higher damage, multi-attack, etc. Look at the BG page for Alluvion Weapons, and you can figure out what items to aim for.

Next you need to look into doing Yorcia Alluvion Skirmish for Taeon armor. Not only does it have fantastic 119 stats, but with augments you can add attack/acc as a single augment (or higher max values if it's just one or the other) as well as Triple Attack and things like STR/VIT or STR/DEX. You've mentioned looking into it, and it's definitely a major component to consider.

Now if we're talking accessories, I personally use Mars's Ring (Absolute Virtue) and Patricius Ring (AA EV's higher battlefield or DM II), but there are other options such as Enlivened Ring (bought with sparks, gives you DEX/Acc), Candent Ring (STR and a little acc), or Supershear Ring (Titan higher battlefield). Neck is going to be harder to upgrade because your options are things like Iqabi necklace (Delve) and Ej Necklace (AHable, but generally expensive). Back with Anchoret is fine, waist I would consider things like Hurch'lan Sash (Delve) and Anguinus Belt (Abyssea - Konschtat Boss).

Basically, you jumped in a little over your head is all. But with a little work on getting your gear up you'll be set in no time.