In the past I've usually gone TE because I haven't found rubber (and because TE was new and I wanted to try it out) but in my newest world I found plenty. I've still gone for the TE powered furnace and pulveriser rather than macerator and electric furnace since I like the way they work, had the resources, and generally find TE stuff easier to craft. (It's generally 2 stages of crafting while IC2 often has 3, plus double-smelting of iron).
I do have a generator, batbox, and recycler though, so I can get some value out of my cobble, and charge a batpack for my mining drill and chainsaw (I turned off the harder recipes that require steel for those tools
).
The extra pulveriser ores are certainly nice, but in any case, do whatever you have the resources for soonest. As for BC power, TE does add some new energy generation options. Currently I only have a plain Generator for IC2 and a Hobbyist's steam engine for BC power. This certainly doesn't run my TE machines at full speed and isn't so good when I want to run two at once, but I've been holding off on making more engines until I have my proper permanent base built so I have space for expandable automation (unlike the hollowed-out natural tunnel I'm currently moving out of).
So yeah, there's lots of options either way. Since you're in early game you don't have to commit fully to one or the other. Or maybe do both and compare, if you can afford it.
Another benefit of TE is that once you build up enough to be able to make its energy conduits, and if you use any of it's engines, you don't have to worry about anything exploding.