I ran 285/70 R17 (33" x 11.25") on saggy stock front springs on wheels with 4.5" of backspacing. Your JK Willy's wheels have ~6.25" of backspacing, so with 2" spacers, you're at ~4.25" of backspacing so you should clear just fine. Depending on tire tread profile, you may get some slight rubbing, but shouldn't be an issue.
That said, you may want to keep an eye out on your local sale pages and Facebook Marketplace. Jeep people swap wheels so much that it's easy to find a reasonably priced set of wheels, sometimes even with tires, that would eliminate the need for wheel spacers. Although spacers aren't as dangerous as some pretend, they are a maintenance item that often goes overlooked, and there are many on the market of questionable quality.