More important then comfort? Ceiling registers are great for cooling, but not for heat.
Which way does warm air go, up not down. Baseboard is normally put against outside walls and under windows. You can't be putting furniture up against all the walls.
Much easier to have zoning with baseboard then a single hydro-coil air handler which then needs dampers to control. On Long Island, we heat more then 6 months a year, so I'd make sure that's the most comfortable config. Don't put a hydro coil in an attic, too much risk of freezing. Maybe hydro-air for downstairs and baseboard upstairs if you have 2 separate air handlers.