new home build / WarmBoard + tankless hot water

[Marco]

greetings all ...my wife and I are planning to go with WarmBoard for our radiant floor heat in our new home build (1634 sq ft, single story, 3 bedroom, great room) and we are also wanting to go tankless for our house's hot water supply ....we are working thru things with our GC and his plumbing sub, but want some other opinions on best way to handle the hot water for the house + the hot water for the warm board ....mainly: can the correct tankless hot water system supply the day to day hot water for all areas of the home AND the radiant floor heat thru all of Fall & Winter ?? or do we need a separate boiler for the warm board ? ..or?? ...or ?? ....just want to get a solid consensus of opinions before making our decision, THANK YOU all for your knowledge & assist !!!