If you're looking for random/fun builds, then I humbly suggest a .. slightly different gold farm.
Honey/dew + Melons = Glistering Melons. 8 in a Centrifuge gives you 6 gold nuggets and 90% of the power required to process it back (costs 50k, you get 1 methane cell worth 45k).
Not the most efficient or min-maxy build in the world, but when you have more honey than you know what to do with, it's a quirky and fun solution.
Okay, that's just plain brilliant. ...Why didn't I think of that?
Also, as far as ore processing goes, it depends on what you want...max yield? Factorization, hands-down. With all the machines together, you can triple your ore output, as opposed to simply doubling it. TE pulverizers are easy to automate and work very well with their companions, the powered furnaces. IC2 macerators/furnaces have the advantage of upgradability, but they lose out on the 3rd potential dust you can get from TE, and only double ores, as opposed to tripling like you get from Factorization.
When it comes to power, TE and IC2 are fairly evenly-matched; starting power for both isn't that hard to get going pretty early on. If you've got the resources, and want to go the TE route, I'd suggest making TE steam engines as opposed to BC Stirling engines: they make twice the power per tick while using the same fuel, while only requiring water, which is easily provided by an aqueous accumulator. IC2's a LOT more straightforward when it comes to power generation progression, even with GregTech and whatever flavour of solar mod you might have available to you.
For making the gold/diamonds, I'm backing up the idea of the turtle-based pigman farm and the use of XyCraft fabricators. The fabricators aren't all that expensive to make, one just costs 4 stone bricks, 4 xychoridite, 1 redstone, 3 smooth stone, a crafting bench, and a piece of iron, which one ought to be able to get within the first hour or so of any map. They can also be daisy-chained to one another, making them quite compact.
Though, if you wanna go the fancy route, you
could use Applied Energistics autocrafting. I dunno how well it interfaces with minium stones, but it'd be different!