I built my house 21 years ago and did the whole thing with radiant. My wife’s feet were like ice before that lol. If my back is giving me trouble I’ll lay on the floor with a pillow and blanket and take a nap .
2014 Switched to Geo , It was expensive but paid for itself.
Spring and fall you may have some trouble controlling indoor temperatures, I would ask your heating guy about an outdoor reset control. It adjusts water temp based on the outside temp.
You’re going to love it!