BUT keep in ming that heat pump will need repairs after 8-10 years if not dead, i have a LG unit that had problem after only 7 years (blown relays on electronic board, i could change them myself since i work in this field . the relays are very weak and designed so unit needs repair
and also it doesnt like temps under 32F with snow, it becomes a big icy block, then it make it defrost, then it become again a big icy block, then defrost...) so i go back to baseboard heating when it is snowing
well, knock on wood but I haven't had any of those problems...
The technology may have improved in the 7 years since you put yours in as well. Computer controlled DC inverter compressors are one example here; they have improved greatly since their introduction in the 1990s. My YMGI unit has no mechanical relays either. Of course one does have to maintain them as one would any central air/furnace unit also which is more work than baseboard, but modern mini-splits have a life expectancy that is equivalent to their central HVAC counterparts these days.
I guess my point here is that electric baseboard is the single most expensive way to heat. The space being heated by the OP is pretty large too given the sizing of the baseboards themselves. I'm guessing around 400 square feet. Plenty of space to consider more of an overall HVAC strategy that can save money over a 3 - 5 year time frame.
By far that is the most concise and complete answer I have ever seen on this board...I commend your detail.
And I agree with you as to why that is the way to go, but unfortunately there are many who just couldn't afford the investment. I don't know about the OP. Anyway, well done.