Have fun, but consider it a labor of love.

That bike in pristine condition probably wouldn't break $200.
In good rideable condition, maybe $100 to $150.

A lot of vintage steel rims from the 80's or 90's might be replaced with aluminum. But, that one.. I'd probably keep with chrome steel.

Does it have spokes now? Or did you remove all the spokes?

I'd probably strive to keep costs down on the restoration, but it really is up to you, and your goals.