Nice one
When you say setting out, do you mean setting the area for it the mine? I still don't know what the numbers mean. The easiest way is, with the shape card in hard, shift right click the builder, then right click a block to select the first corner and the right click to select the second corner. The first corner and second corner you select should be opposite corners of a box. So if the first corner you select is to be the front, top, left of the box then the second corner needs to be the back, bottom, right corner.
There are guides out there by the mod authors or videos on mod spotlights for most things as the FTB packs are popular mod packs. If you're considering using or are using a mod I'd still recommend looking up more information than I'm posting. I'm aiming for this thread to be more of a general guide to getting starting than any detailed focus on specific mods.
ChosenArchitect is pretty good, I've watched some of his videos as I was trying to find some detail on blood magic before I blew my first world up. The one I watched when I first got in to this modpack and getting back in to I've re-watched a couple videos of is Welsknight. He does a pretty good job of explaining too (though worth noting the modpack has altered slightly since he created the videos).
I've got everything typed up ready for the builder and using it in the mining world (including the upgrades to the storage drawers). I want to add some stuff about the more mid/end game mining, a bit about chunk loading and some information on automating getting it all back to your bases storage system.
I agree the automation is fun but even in vanilla I like automation I just didn't think Mr Dig a massive hole by hand would ever say it