Fenton Gyro slot mag wheels for 68 fastback project

That is kind of where my indecision lies. I have always built my cars with period parts.
This one I want to be able to use more as a daily and not just for sunny afternoon shows or drag only. I am trying to work out the type/size of tire and gear ratio that I can take it on a interstate trip. Of course a vintage look appeals to me but I would sacrifice the square corner tire look if I need to on this car. I have never had a set of the drag radials to know if they are interstate worthy. Hoping to learn from others who have used some of the more modern tires to make a tire choice.
This car will never see the track, that I am sure of. I would like to keep the tires as tall as I can. I am almost certain I will cut the fenders for a tall dia. I'm thinking 29 or 30. Do they even
make drag radials in these diameters?

I was thinking ,from a safety standpoint. If stuff happens,a big inch wedge/stick can be a hand full on the traction aspect.I run 275/60/15 BF G Drag Radials,27" installed on a 15x8 rim. Done time on the interstates,they are fine. Some of drag radials go up to 315 ,on a 15 inch rim. Tire life, I can't vouch for. I would look at a good radial,whatever you do. Kegan suggested, B.F.G's .(not a bad choice).