Sorry to hear that your dog isn't doing well. If it was my place, I would put in a big curtain for the time...and then once it's no longer needed just remove it and keep it as it was (which appears to have worked for you for quite some time).5 panel bay window will be awkward to manipulate 5 different blinds plus the nerd in me would probably go nuts trying to make them all even manually. Then the best reason is the blinds are likely going to be white material so sticky/dirty fingers on them (which will happen) will probably not be a good thing.
I can also pretend I’m a Bond villain by having them all go up at the same time in the morning while I survey my kingdom.
Expecting 1k ish perhaps. More would be shocking, less would make me happy.
But am def curious what the quote was. My cost for 3 small windows was quite expensive...about 1k IIRC.
So I put in manual blinds instead for $200 and just deal with it.