Your choice will have to take into account available fuel.

I think the 6X and 7H1 will have chambers too large to deliver reasonable performance on a 350. The #11 may be adequate for a cruiser, but not with that cam.

If you have access to good quality high octane fuel without ethanol, you can run the 140s, which calc out to approximately 9.8:1 on a 350, as long as you match up all the valvetrain components.

The cam is a lot of cam for a 350, you may want to consider a slightly more moderate cam for street drivability.