DIY & Home Improvement

With baseboard heat I'm guessing it's electric only.
Baseboard heating sucks.
How severe is the weather where you live?
Are you planning on staying a long time.

Yes, they can duct your crawlspace.
Eight grand sounds like a very reasonable price for a new, complete HVAC system depending on the economy in your area.
In the SF bay area it would be twice that.
The equipment will be WAY more efficient than your current system. The whole house will be the same temperature. Your electric bill should drop dramatically AND, you get air conditioning which you will really appreciate if you get high humidity.

The ductless systems are extremely good too but you may need more than one to do the whole house. Currently, the biggest one I know of can only do three rooms.

Ask away, and, oh yeah, get at least three estimates and CHECK References. The HVAC business has some really good people and some really, really bad ones.so do your due diligence You won't be able to tell if they did a good job or not but your equipment service life and your utility bill will.