Front End Rebuild vs. After Market K-Frame

I am attempting my first restoration though I haven't started yet. I may be getting ahead of myself but I was trying to figure out what to do with my front end.

I am building a 1974 Duster. Currently, it is a 318 3-Speed, I am going with a 360 4-Speed. It is going to be a street car. And I'm sure it may going down the track a time or two but just for fun.

I'm sure there is a ton of things I haven't thought about so please bare with me.

1. Should I just rebuild the entire front end and call it a day?

2. Should I consider rebuilding the front end and changing out the upper and lower control arms to the tubular type?

3. Or Should I just save my pennies, a lot of pennies!, and look into getting an aftermarket K-frame?

I know these are open ended questions but any thoughts are appreciated.

Thanks in advance for your comments.8)