I spent hours and hours with my digital Longacre caster-camber gauge, a pair of turn plates I bought from Harbor Freight, and my Longacre toe plates + measuring tapes. The toe is no problem... to get you to the alignment shop, the toe is easy and takes 10 mins.
The camber is relatively simple. Even if your garage floor isn't 100% even, you can zero the gauge out on the back wheels each time and it's not too bad.
My trouble was with the caster. A cheap set of turn plates just didn't do it for me. I have read many threads over on c-c.com about guys DIY'ing their own turn plates, but that didn't work out for me.
While I was installing different parts, changing racks, fiddling with bumpsteer, etc etc the DIY alignment tools were helpful, and perfectly adequate. Once the car was put together, I dropped it off at my local chassis shop and let them have their way with it. $300 and one day later and the car was digitally aligned, corner weighted, and bumpsteered all with a printout. The difference was night and day. I can't say enough about having the car corner weighted and bumpsteered by a professional chassis shop. I thought I could bypass the alignment shop, but once I found one I trust, I wish I had gone there in the first place.... If you plan on taking the car apart a million times, then maybe it's worth it. But the Longacre digital camber gauge was ~$200, the toe plates $50, and the turn plates $175 ... Adds up quick!
82 Mercury Capri - N/A AFR 165, FTI cam 11.99 @ 112
86 LX Coupe - Coyote, T56, 11.55 @ 121