You need the 4 treasure maps in your inventory, but I assume you have them already since it sounds like you are past the first room.
The following
cave map shows the locations of the crystals and the bowl.
In the graphics options within DD, you can change the darkness setting to 50 to increase the light range, and maybe bump up the gamma a bit to lighten the screen. That should make it easier to see stuff.
Drop any rope you have in your inventory. Once you get past the sacrifice bowl the 4 rope you need will be beside the teleporter pad.
You are correct about the gold; just drop/store anything you have except for a single stack of 2002 pieces.
Silver Armour and Treasure Maps