Okay so I took the time to read this whole thread and I have to agree with the thoughts that have come back up recently, too much grind for a learning pack. The mod list is not one that calls out to me to build a long running world and based on its name I installed this pack to do one thing, Learn GregTech.
So since this in Minecraft and I can alter the game to what I feel is the best for me, I have done so. My simple way of solving the problem is to go get a handful of what is needed for the next quest item, and after accomplishing that I use creative mode to grant me the reward which is the total number of the needed items. I can then officially complete the quest thanks to the manual detect button and move on down the line. This has me spending time finding the resources in where they should natively spawn but not spending days and days collecting the quantity that would be needed to build everything at that tier. I hope to complete all the quests in this pack in a matter of days not weeks so I can move on to playing something like InfiTech or the newly proposed packs a page back in this thread. Real life gets in the way so I might still be on this pack for any number or real life weeks (which I guess is also why I am opposed to the grind that this pack puts on a player).
Now I also want everyone to understand that I really like this pack, and prior to it I have skipped over GT based packs simply from the stigma that GT packs are hard and that Greg doesn't care what his players think. Also my sons are younger and they are not interested in this style of play, but they are well setup on their own DW20 world now so I thought I would start to look into what the "big kids" are doing and see if that is interesting to me.
TL;DR I think the pack is awesome in that it shows me what all is available at each GT tier, but I also feel it is too slow to be an effective learning pack for anything after the bronze age. My suggestions are to have the requirements be a tenth of what they are and the quest rewards be more than is needed to build everything for that tier so you still have some material to play around with. Especially once other GT packs go public, I envision this one being a creative world learning sandbox so when you play in your real modpack you will know what you need and how to use it.