My recommendation is to add a factory style anti-sway bar, which will mean switching the LCAs out for ones with tabs on them. It's a pain, but it reduces clearance problems. I do not recommend the tabs that attach with the lower shock bolt. There were clearance problems and ultimately the tab did not stand up to the rigors of canyon carving and broke.
Even adding a stock bar will be a big improvement over no bar. If you plan to use a rear bar, go for a larger than stock front bar. In other discussions, the only consistent difference I've seen between solid and tubular bars of the same diameter is weight.
I added the front bar to my '73 after I had driven it a while. But at the time I added the bar I also did a full front-end rebuild and conversion. I replaced the shocks, control arms, rubber bushings, tie rod ends, and ball joints. I also swapped the SBP drums for BBP disk brakes. Using AutoXCuda's suggestion, I reduced the toe-in and increased the negative camber. I went for all of the positive camber that I could get, which was +2º. Oh yeah, I also went from a 195/70-14 tire on a 4½" rim to a 205/60-15 on a 7" wide rim.
Too many variables changed to evaluate the addition of only the bar. As expected, this really transformed the way the car drove. Corners much flatter and steering turn-in much sharper. The power steering even seems to have developed some "feel" to it. Even though I retained the stock TBs, the ride is better. By better, I mean that the ride is compliant, not stiff, but the car does not float or bounce over undulating pavement.