You may want to hold off a little bit on the selection of a front compatible axle. Reid Racing is coming out with a knuckle that will convert the uni-bearing to a full floater hub with a manual lockout. The only thing is that it will use a GM straight axle spindle out. That gives you a 6 lug wheel requirement. However, you could throw on a Ford hub (rotor, caliper) on GM spindle to get a 5lug (5on5.5) wheel pattern. Then match the rear lug by using different shafts. The steering tie rod will be placed in the stock configuration location so that you wouldn't have to mess with the track bar axle location. However, with the GM designed knuckle it will have flat top capability so high-steer could work. Then you would have to relocate the track bar to match the drag link angle to minimize bump steer. Pricing will be under $300 on the high side to over $230 on the low side. They stated it will work with the CJ spindle/hub/rotor/caliper also, but then you are getting the smaller u-joint (260) with that setup. Keep it GM and you get the 297/760 larger joint. This size ujoint is the same as the TJ D30/Rubicon D44. The knuckle axle hole will be larger so when you do break a joint and the yoke ears separate, you could still pull it through the knuckle center hole.
Their market research shows TJ owners wanting manual lockouts for the 35-38" tires and stock upgraded axles. Many TJ owners swap in alloy shafts so opting the rear alloys to match the front lug pattern wouldn't cost any more, though getting working brakes is another cost. Adding a conversion spacer is another option to get the rear axle lug pattern to match. These are to work with the TJ stock D30/Rubicon D44 inner Cs on the axles.
Depending on what kind of wheeling you do, how aggressive your right foot is, and how much weight your Jeep will be, the D30/Rubi D44 can handle some size itself. The tubes will probably require some kind of truss to minimize the deflection (known problem with the coiled D30), the troublesome uni-bearing will be eliminated.