I tried a tekkit seed out today and it was crazy!
it has every basic stuff you need like: Oil right beside you spawn, also a awesome mine with uranium, gold, copper and loads more stuff. If you want to find the mine, swim to the top of the oil spout and swim under through the whole - you'll get pushed off to the mine right after you bubbles run out. You can also keep swimming under and then you'll find a huge underwater oil lake! If you look underwater it has some gold too!
I think it's the best way to start off tekki!