Totallly up to you. Any solid 1st Gen Camaro is a valuable car - some more so than others. I am as proud of my '69 RS, 327/210 hp with Powerglide, 2.73 non posi rear end with monoleaf springs as any other 1st gen Camaro owner. My car is a lot like yours. Very nice car with original interior, tranny, and rear end. Replacement, but correct 69 327. Very straight sheet metal and no rust. Car had 25k miles on it when I purchased it in 1991, now has 41K. Needs a repaint after the youngest daughter finishes up college. Mechanicals are 75% complete. Car has been stripped to the front friewall, sub frame removed and reassembled.
Will it be worth what I eventually put into it? Who knows. Even base coupr RS cars are appreciating significantly.