I started playing with a Anubis account two months ago and I need some advice how to improve my team. At that time Apocalypse reprint was happening. I managed to get all of the SSR lances, one copy of the SSR sword and four copies of the eidolon. Because I lack good dark weapons, I chose to not fuse the lances. The disaster weapon's stats at mlb are not much higher so I don't really feel like replace them and I can always fuse the lances.
This is how my weapon grid looks like:
Kamihime General Discussion + Q&A-.jpg
Of course only one of the lances are at a high skill level. I also got the SSR Bow from the Koihime event and one copy of the soul weapon for Hercules (and Mordred).

Because of the union event I've gotten new dark weapons and I've a few more mlb disaster weapons. My question is: should I fuse them now or replace the sr weapons with the new SSR weapons? Or maybe I shouldn't fuse all the new SSR weapons?

Another question is about my eidolon grid. This is how my eidolon grid looks like:
Kamihime General Discussion + Q&A-.jpg
I've got more than 3000 eidolon orb. I was thinking of getting Jack O'Lantern from the eidolon store. But looks like it's better to get Tiamat because of her high stats. Should I go for her and should I bother putting the dark lilim in my eidolon grid or should just sell her?