upgrades like rushes are not etsy-legal; no listing can be dependent on a another listing.
The only way to list them as individual listings is to have things that can be made (or are supplies) and shipped individually; so for instance, you can offer a gift wrap listing, and if someone buys it and nothing else you are able to just send the gift wrap (you cannot make the listing conditional on the purchase of something else from your shop, though).
For the upgraded chain, you can just add it as a listing variation (one variation is the standard chain for your normal price, the other variation is the upgraded chain for the standard price + the upgrade).
For rushes, I don't have a great answer. We do them for free for this reason.