Radiant Heat for 660 sq. ft. Monoslab

I am designing a 660 sq. ft. cabin in Zone 7 with FPSF 4″ concrete monoslab. I hope to use radiant heat but I am looking for a system that will minimize the size of support components. Our utility closet is already packed with a water heater, pressure tank, and a water softener. We want to be all-electric as well.
Thanks ahead of time!
Replies
The heating and cooling load drive all things HVAC. What is on top of that slab matters more than what is under it.
A cabin sounds like you may plan to use only infrequently, and have the ability for a quick warm-up.
Resistance heat in the slab itself or under a tile overlay would be simple to install, and have little exterior equipment but take more energy than other options, including air and ground sourced heat pumps.