The mod is included in the pack I'm playing, Revelation. And Last time I played it, it was still called Tekkit.
Uhhh... no. Tekkit has nothing to do with FTB. I'd rather not bring up old drama, but suffice to say, you are thinking of two entirely different things that have zero in common.
What pack would you advise me to take? The more complete, the better.
Depends on what you mean by 'complete'. The modding scene has changed *significantly* over the years. And you can enjoy a mod pack without using a given mod IN the pack.
My suggestion to you: Dump IC2-ex over the side, and pretend it doesn't exist. Instead of using IC2, use Thermal Expansion and Thermal Dynamics as your primary tech mod. You still get a Pulverizer (effectively macerator), a Powered Furnace, and advanced furnace that does two smelting operations at once, machine upgrades to make each machine individually better, and a FAR more sane power grid. No more machine explosions!
Also, look into the mod Immersive Engineering. It's a lovely steampunk-styled mod which is asthetically as well as mechanically pleasing. It also has a guide book (made with a book plus a lever) which is extremely detailed and informative. This is the awesomeness.
I remember the Logger, that was back in the 1.2.5 and 1.3 era. Forestry went full HAM on the 'we don't want you to have nice things', and has gone in a very different direction, to the point of no longer being viable. Instead, use Industrial Foregoing. This stand-alone mod enables you to automate all of your farming and ranching needs. This lets you do the following: Tree Farm (uses two machines, one underneath to plant and one to harvest), crop farming (ditto), milk and wool production from animals in the area (only needs a single machine), automated beef and leather (requires a three-pen setup to run optimally), and such.
Also, I tried, and you can't replace IC2 rubber by dry rubber.
Seems like they're staying with the 'IC2 does not play well with others' theme, then. Which is really my core beef with them. A mod pack, in my opinion, should work together as seamlessly as possible. IC2's infrastructure is basically and fundamentally incompatible with everything. In essence, you are required to build multiple infrastructures instead of having all of your infrastructure work together. Which is why I generally avoid IC2 these days. Unfortunately, while other mods have moved on and advanced, IC2 is focused primarily on pleasing the Gregites.