New to the forum, did a search AND reviewed the FAQ but I may have missed something so please be gentle.

I have a Savage 12FV in 204 Ruger, and am considering converting it to .223 Remington. I have a few questions about this for those who have done this before:

1. Is this a reasonable do-it-yourself project for someone with intermediate knowledge, or should I go to a gunsmith? I'm not above taking my time & learning the weapon better...

2. Research on this site has shown me that the bolt head for 204 is the same for 223, so I should be good in that regard, correct?

3. Assuming I'm good on the bolt face, what would I need other than the new tube, a barrel wrench, and a set of headspace gauges? Would the internal magazine work or would I need tweaking there? Will the OE stock should work as long as the barrel diameter is similar?

4. If I wanted to go the other way toward .308 Win, would the .473 bolt head & new mag follower be sufficient on top of the stuff in #3?

Thanks to all for the insight!