But there are ways to automate the growth, yes harvesting is Gregtech only, but with a few things, one can (somewhat complexly) automate everything completely.
Yes, I'll use an Igneous Extruder and a Magma Crucible to make Lava to make Tin through an Industrial Centrifuge. I hate how Tin Cells are used up. The extra cobble can be scrapped and turned into fertilizer. Two scrap plus a fertilizer makes 2 fertilizer. So it's easy to automate that. Then, redstone can be gotten from the plants themselves, while a spider spawner and a macerator will get you grin powder. Double extract water cells, and you're good to go! You don't even need the fertilizer or the Hydration cells, though it will take a bit longer to grow.
So you're using 64 eu/t to power the Crop Matron and the Crop Harvestor (why'd he spell it wrong D
32 eu/t for the Centrifuge (and extra goodies!)
And you'll need a bit of EU for the macerator and extractors. It's somewhere around 128 eu/t for full automation.
Since squids can't Soul Shard, Blackthorn is really useful, especially if you're one of those people who like to have dyes on them.
Yes, hops are stupid, on the tekkit server I used to play on, everyone was obsessed with them. HV solar arrays? $400. Hops? $500.
Terrawart's easier to hold than Milk, but a lot harder to get.
Iron and Gold are renewable in other, less maintenance ways, while redstone is common enough that some automatic mining should be able to handle it quite nicely.
IC2 is one of those "base mods" for me, though. It wouldn't be the same without something ridiculously expensive to get in the end. If Mass fabs required more energy (due to chunkloading), it would be better.
But IC2 crops are an underdocumented overlooked source of materials. People are complaining they don't add anything new, and crops seem like a great thing to add updates to (besides everything else).
A lot of this "No IC2 thinking" would probably not have happened if it weren't for Thermal Expansion. I love the mod, KingLemming did a great job, and I use it often, but the Pulverizer and Induction Smelter take away from IC2's Macerator, especially in early game. In late game, there's that whole debate going on, but I just use the Industrial Grinder.