I've been playing on the public server now for almost 3 weeks and I've only got around 8 LV machines built. And it's not that I can't build more machines (now that I finally found a redstone vein), or progress on to the MV era. I've already made all the alloys I'll need to craft my first EBF and the plates for it are sitting in the output chest of my plate bender. It's just that I'm so busy with other parts of the modpack that I didn't really use before the last time I played that I have no time to dedicate to building GT machines. I'll get around to it eventually. In the meantime I'm enjoying delving deep into Thaumcraft (and using it to replace many of the early game things that are a pita in GT. I'm also actually building buildings this time around instead of just digging a hole in the ground.
When I do get back around to finishing off all of the LV machines on my to-build list I'll be tallying up how many of each component (ie motors, pumps, fans, pistons, hulls) I'll need to complete the remaining items. And then if I need, for example, 32 LV motors I'm gonna build 32 motors and set them aside in a project table for later. Now that I've got the plate bender, lather, wire mill, and polarizer the only machines that are really time/resource saving to build out the rest are maybe the cutting machine for bolts and screws. Basically just assembly line this stuff and slog through it in an afternoon.
I also intend to build some RC steam turbines and see if some kind soul would let me use their EBF to make enough aluminum to make a transformer and MV input for my EBF so I can skip making 5 basic steam turbines and all those battery buffers.
And even though I'm playing this modpack significantly differently than I did last time through I'm still not touching a ton of mods or large swathes of some mods. There's plenty to do besides focus on getting that next tier of GT machine.
Edit: My only real motivation right now to power through the GT machines is to get the Universal Macerator so that I can produce sand quickly and easily. So I can smelt it into glass and use it for Thaumcraft stuff.
Also, I'd much rather play on a server than SSP. I only use SSP for testing things that might blow up or waste tons of resources. I don't like the temptation of being able to make it day, shut off the rain, or cheat "just this one time". I don't want to know the seed, find a stronghold faster, or be able to find out where a particular biome I need is. Also, it's fun for me to talk to others and see how other people's ideas become reality in their bases and implementations.