Well, I tried to get the Growth Egg last night. (I am at the point just before chapter 12)
My party was Vanille/Fang/Hope in SAB/SEN/MED and they had ~7000/7500/5500hp and Vanille had a Marlboro Wand level 24 or so, not fully upgraded.
I put on Aegisol and Fortisol and started the fight, first hit went good, but only just recovered and started spamming Death and I yelled out when it worked after only 6 tries so changed to RAV/SEN/MED and just had to kill the little guys.
But the problem was that Vanille Magic is a little low so she didn’t do a lot of damage with Firaga so it took a while and after a few minutes the shrouds wore off and they killed me @$%#$#
So the problem was magic power to kill the little guys but I had no more CP left but I could upgrade the Marlboro Wand which gave an extra 200 Magic to Vanille and tried again knowing I was close to getting it.
But the next 20 fights or so ended with the party dying from screech

and just as I was about to give up Death worked and I took on the little guys again, this time I was a bit faster and managed to kill one just before the shrouds wore off which was just enough to survive, Fang had only 20hp left at one point but I managed to kill them all, final time was 7:32 minutes.
So now I have the following accessories:
Light: Sprint Shoes/Connoisseur Catalog/Growth Egg
Fang: Sprint Shoes/Survivalist Catalog/Warrior Wrist
Hope: Sprint Shoes/Collectors Catalog/Diamond Bangle
Any other accessories that are recommended to replace the warrior wrist and Diamond bangle?