Best tire pressure for 69 dart with P245 60R14

How many miles do you put on your car per year?

I only put 1000 miles last year. even with uneven ware my tires will outlast there 10 year warranty.

What was the recommended rim width for your tires?
I expect to run like 1k miles a year too. Currently I have stock 5.5" rim wheels and 205 70 R14 and want 245 60 R14 on 7" wheels which are on specs. More concerned how the car will handle with those wider tires.