Wait as long as you think is appropriate; no one else can do that for you.
It is up to the buyer first to use good judgement in selecting a buyer. There is a lot that can be done BEFORE making a purchase; you need to confident that the seller will follow through on sale. As a buyer you also need to make sure the seller will use a shipping method that fits your needs.
It's difficult to fix a situation after you accept a deal that was cheap.
I've made mutliple purchases from China and I've researched sellers. I also select a seller that will ship quickly. Custom items might take a week to produce and then the items are shipped; they arrive with 48 hours of pickup in Hong Kong by DHL. No headaches; just good service.
Once you've selected a low cost seller and shipping method there isn't a lot to be done. In my opinion 60 days is way to long; I start a dispute with a European suppler within 12 days of non-arrival. I don't want to risk losing my money.
In your case, why are you wating? Get it done now. You already have your funds at serious risk. When you get the item and it's not OK you will have to return it with tracking--a big expense. Cut your losses now.
