Hy Pvmt-Pndr, welcome, if you can find a gear set with the ratios you want and it is transferable into your rear axle housing without additional parts, then I would say make the gear swap, that job is probably the lightest work of all your options. You may be able to find a whole assembled center section with the ratios you want, the supplier will want to know the size (diameter) and spline count of your axles. Please keep us informed if you find the parts you are looking for.
