I haven't shopped personally for same lug pattern but different hub size spacers, I would imagine they are out there.
Unless wheels are extremely hard to come by in your area, it may be worth waiting a little longer to find some that bolt right up. That being said, when I bought my kj the tires were shot and I wanted something right away for cheap that had good rubber. 16" jk jeep wheels are dirt cheap around me, and I had spacers from my tj still on hand, so I am still running those on my jeep. They tuck in just about at the factory backspacing/offset.
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I don't personally like having 20 extra lug nuts to worry about, but a quality hub centric wheel adapter/spacer can be safe if looked after. I've towed a 5x8 trailer for years on these spacers though.
I say weigh the pros and cons of the price, effort, availability, all the variables that come into buying wheels and see what fits your needs the best you can.
Also a handy site for calculating sizes, and backspacing of wheels, just click the different links for size comparison, backspacing calculator/conversion etc.
Use our wheel offset calculator to visualize the new tire position when changing wheel and tire sizes. Convert wheel offset and backspacing to calculate the correct setup for your vehicle.
tiresize.com