The best card options for your celine ribbon are Kathryne Keyron card (if you need more variable cast reduction) or Lichtern Red, Blue, Green or Yellow if you need to boost any elemental skill damage.
If you can't affort the Floating ball for now switch to Mob Scarf + Sunglasses, gives you more Magic attack also a good card for your Celine Dress could be the Sweet Nightmare Card so your casting cannot be interrupted.
And Fixed Casting Reduction stacks at least what I believe, tho thats a ambiguous topic to be honest but do your testings with and without the survivor orb and celine brooch.
The other lvl options you have are Bio 4 and illusion of turtle but you wont be able to survive there so stick with Big Bells.
Hi just another quick update. So I got to level 170 with Big Bells (and got my 2nd costume FINALLY). I am currently 171 and actually got a Pazuzu Ring. The difference is night and day. I can easily mob Illusion of Turtle map 1.
Any other alternatives to level? I saw Nogg Road 3 somewhere but I believe I need to be level 175 to get there.
I am kind of hesitate to go Bio 4 at the moment lol.