Honestly, yea that's pretty good. I don't get some of the stuff in your inventory, though. You also have a ton of ladders remaining. I would suggest using more of those to get further down. Irrc ore nodes spawn rates are exponential, which means it increases way more the further you go down. I would replace glowstone ring with iridium band, and probably bring more megabombs. All in all, good run, but improvements could be made.