In the process of having a home built. The architect had mechanical engineer spec. the mechanicals. Calls for radiant heating and high velocity air conditioning(unico). The plans call for six separate zones with separate air handlers and condensers. The local installers want to reduce to four air handlers and zone with dampers. Also want to use conventional air conditioning in some of the zones. Can high velocity and conventional be mixed. Any recommendations. Also want to know if whole house filtration can be utilized with unico system. Engineer calls for hepa on all units. Finally can humidification be utilized with unico system. Calls for drysteam. Thanks