I'd get rid of the 14 inch wheels and tires. Go with 15 inch. I use the Michelins at 235 x 75 x15. BUT....on my ex 66 Caravel
they would not fit the wheel well. I had to go with 225x65x15. I also use 700x15 bias on others with no trouble for over 10 years using bias. The extra ground clearance you get with the 15 inch wheels and bigger tires will be something you will like.
"If it can't be reduced, reused, repaired, rebuilt, refurbished, refinished, resold, recycled or composted
then it should be restricted, redesigned or removed from production."