I have a 10 year old 110 in 30-06. I bought it new 10 years ago. It probably has 80 rounds through. I am interested in building a solid 1000 yard shooter for local competition shooting and was considering starting with this rifle. I have a few questions:

Is it worth it?
Should I re-chamber to 308, 300wsm, or just leave it in 30-06?
Which stock?
Which barrel?

I am looking to spend less than $1000 bucks if possible and I am not a gunsmith but I am very mechanically inclined.

Thanks in advance.