I'd try to fix what you have and buy the wrecked jeep and part it out. Milage is just that, yours could be clean and problem free where as the one you found could be neglected and wore out. Does yours seem tired, knocking, smoking?
2001 WJ 60th anniversary edition 4.7 quadra-drive
5" hybrid lift, 265/70/17 Guard Dogs load E, bilsteins 5100's, addco sway bars, JKS front quick disco's, JKS adjustable track bar, KOR durometer track bar bushings, IRO crucial path front L.A.s, 1.25" Spidertrax spacers
Colorado Jeep Club Member #262