Slight correction: Radiocarbon dating goes back only about 50,000 years. Other forms of radiometric dating can date things much older.
I whole heartedly agree with you there.
Here is another thing for the Biblical literalist to question. Why did God create the Moon, for that mater why did God create Saturn?
If Genesis is taken as literal fact there seems to be no reason for Creation outside the bubble of general Earth space, after all our universe could indeed be that small, it wouldn't necessarily hurt anything.
Why make Creation so big, of what use is it?
It certainly would not contradict the Bible in any way for it to be smaller, so why did he create it?
These are the things that I think we as Christians need to be asking ourselves, not just the Earthly centric question of why all our geology and fossil records are not explained in explicit detail by a world renowned scientist that God so handily had available at the Dawn of Creation to explain to us in explicit literal detail in the here and now.
And here's another little thought problem for you, who's to say that a scientists with even todays knowledge of the universe wont be called a crackpot 30 years from now by an even greater scientist? So how far ahead in time was God suppose to go to give us a better understanding of exactly what he was doing at Creation.
Maybe, just maybe, he gave us a basic outline in Genesis and expects us to figure out the details with the evidence he left us, we are His creation after all, Created in His image.
Maybe He's telling us' "I gave you that brain, NOW USE IT".
There is a whole lot of universe out there, His Creation, for us all to be just concerned with just this little small corner of it.