Only one more week remaining until the Nintendo eShop for 3DS and Wii U is fully closed. You WILL NOT be able to get DLCs, exclusives, DSiWare and VC games mentioned in the DLC page if the deadline has reached. That could be very, VERY awful! Plus, your entire plan to get a balanced collection of these games would all have been for NAUGHT!
So you must hurry and get those by using whatever amount of money you have from Nintendo eShop Gift Cards so far or with a credit card. You can place the amount from money from them safely on the Switch eShop Account linked to the one on both 3DS and Wii U. There is not much time left! If you already DID get those aside, then don’t you EVER worry about it.