Hi Alvin and welcome to the forum,
Reading through your post, I think the best advice I could give straight up is to clear up what seems to be some confusion regarding suppliers. Wholesale and Dropshipping are two very different business models. Some dropshippers my call themselves wholesalers, but in reality aren't. If supplier can't supply you a volume of product at a discounted price over buying just one, then they are most definitely not a wholesaler, they are a dropshipper only.
So technically, you can't really dropship from a genuine wholesaler. This link will highlight your supply resource avenues more clearly Link hidden: Login to view