I will mine a chunk or chunks for you in survival minecraft

Yes and no. I will mine in the nether, except for my premium plan, due to size restrictions. Bare in mind I may run out of time when mining the chunk if I mine from the bedrock roof to bedrock floor.

A chunk from sea level (Y 62) to bedrock (Y -64) Take around 1 and a half hours (90 minutes)

Yes! All blocks mined will be stored in chests, but chunks mined through TNT dupers will have significantly less blocks saved.

Yes, I will need an Efficiency V Diamond or Netherite pickaxe. A Haste 2 beacon would also be appreciated, but not required. Armour and food will also need to be supplied.