I own a ranch 1400sq.ft. Planning to add 1000sq.ft. by adding 2nd floor. Have baseboard heat want to extend pipes to 2nd floor. How much BTU per room live in MA. Will come up with pipes in one place loop around outside walls and drop down the same place to the basement. Will I need to install exp. joints unions bleeders. How hard is it to install new boiler(me background cornice worker)can solder well.