Anyone here have experience with a mini duct HVAC system?

Wife and I are renovating a 130 year old house in the mountains with no HVAC, highs are typically around 80 in the summer with only a few days over that. I'm not a fan of the ductless units (aesthetically), and I'd rather run mini ducts over traditional ducts (from what I can tell reading online) as they're less 'intrusive' to install. The house currently has base board heaters with forced water for heat, works fine but will be removed when we install HVAC.