Do you have a long range plan for your truck? Are you planning on driving it on a daily basis or only occasionally? Is your driving going to be in traffic? What upgrades, if any are you planning on making?
If you intend to upgrade to front discs, you can go with a 5 lug 4-3/4" pattern. Later model diffs come with the same 5 lug patterns.
Quality wheel adaptors are expensive and create some issues that effect long-term bearing life and handling.
There are a lot of 6 lug rims from Chevy trucks that might fill the bill until you get around to switching to 5 lug. IMHO the stock steel wheels with good tires and beauty trim rings are classy looking. It's truly up to you, but I would put together a long-term plan so you don't wind up dumping a load of money on parts that you find you don't need, or worse yet, that you can't use.
Been there....done that!!!! Hope this helps!
Dave