Well I hope you'll have a nice time or even a great one.
I guess I misread your post, I thought you were saying you did not remember the score you made, not that you did not remember the dice... So you need to roll 1d8+3 for this level.
You may take a bag of tricks, One or two +1 scimitar is always a good choice, a bag of holding, brooch of shielding, cap of water breathing, circlet of blasting, cloak of protection, cloak of the manta ray, decanter of endless water, driftglobe, goggle of night, lantern of revealing, mariner's armor, periapt of health, ring of jumping, ring of mind shielding, ring of swimming, ring of warmth, ring of water walking, Robe of useful items, rope of climbing, slippers of spider climbing, wand of magic missiles, wand of secrets, wand of web, wind fan, winged boots.