Front end alignment at home

I do all of mine with old school bubble gauges and a trammel bar for the toe.I do have turn tables. Some guys use sheet metal greased in between. Also old baking pans for the base tin, helps with the excess grease from getting on the floor.
You did the right thing with dialing in as much positive caster as possible.Use your own specs for what suits you way of driving.
I too have the Longacre bubble gauge along with a rim adapter and a few other gauges that cost about $30 that work good too.