As some one who drove there model A as there daily driver and only car for 4 years though hot summer days and New England blizzards putting about 150 miles a day on it I have some good insite on this topic. The reality is most of you who break down do so because your cars just aren't driven enough the more you drive an A the stronger and more reliable it gets once you dive the bugs out of it (the bugs the ocational trip doesn't shake loose) they really are bullet proof. My biggest break down was I had a water pump seize up on me once on a 3800 mile road trip; and believe me my truck was far from being in mint condition.
I recommend a good set of tires. And extra point plate all set up and an extra condenser.
Rainx is good and don't forget to use your hand signals turning. Adding the second tail light helps incase a cop with no knowledge of older cars stops you. All these modern things like led lights and lap belts just give you a feeling of being better of but really aren't. Cops have both bright blue lights and they still end up road kill during a tragic stop. And in regard to the 6vt system, iv had plenty of alternators let me down dead on side of road. It those old gens go out slowley and tell you there going. You'll I find in our As the 6 by system works just fine if it doesn't it's becouse your car has a problem. My repop aluminum nitrate reflectors with original incandescent bulbs and reflectors work the balls on 6vt much brighter than my 12v salvaina sealed beams in my Jeep Wrangler that are (also relayed)
Drive it and have fun and remember if something on the car is not up to par it's not cuz the system isent good it's because your cars not right. My model A was the most reliable car I've ever had oh btw keep a pair of nilon stockings in your car in case you ever lose a fan belt or water pump tie from crank to gen and go. The water pump realy Isn't needed when driving only sitting at red lights on hot days. And one piece of information that was given to me by Keith True on here) that has never let me down (99% of all carberator problems are electrical)
i.e. Always ignition and wireing not carb so as soon as you start thing carb just push carb out of your mind. Have fun good luck don't listen to crazy naysayers saying you need every mod in the book and a trailer of spair parts.