opinion on this kit?

It looks okay to me? I think Right Stuff puts out a decent product. Looks to be a complete kit and would be a pretty easy install. If there is a World of Wheels car show in your area, you could pick up a Summit catalog and save 10% off of that price. When you throw in free shipping and no sales tax, it's hard to beat. You could scour swap meets for spindles and buy the rest of the parts individually brand new, but for some people it's easier to buy everything all at once in a kit.