Yes 1k is a bit on the low side, but from a biasing point of view it is no big deal whether 1 or 47k is used.
There could be issues with input offset currents and temperature drifts on an old 741 circuit, but probably makes no difference in this application.
Regarding the 6 year old business, there seems to be a thing on this forum where someone with one or two posts will dig up a thread which is years old and make some comment or add some snippet of information.
This is all well and good, but, the origiator of the thread is long gone from here and no one else is bothered about the old thread.
Even worst people start putting some effort into answers which are not required.
Been there done that and got the tee-shirt!
Don't feel bad about it, if you have a genuine question, which it looks like you have, all well and good, but the pavlovian response here is to point out the age of the thread.
Yes, I do that myself quite often.
JimB