Restoring the speaker is not a bad idea. Nevertheless, remember the amp issue. You need more power. The Blue Note amplifier is good, but not the final thing that will drive your speakers to its limits.
Check what the repair might entail...the worst is to say hour rate, later to figure out that this repair person might have billed you more because he "did not expect" this too be too difficult. I do not know exactly what drivers the Ohms might need to be refurbish, but if it is to send the driver to the factory and later installing them yourself, it might not take too long. The cabinets will not need anything to be done.
The Blue Note will force you to upgrade, but to a different type of speaker.
Maybe you should look for an integrated with more power, if you go the route of restoring the Ohms.
Some ideas as integrateds, Plinius 8200 MKII, goes for around $1200-1300, almost double what the Blue Note goes for, but it has plenty of power.
I am not really impressed with Musical Fidelity designs. They have integrateds that fall into the price range you are looking for.
Other integrateds I can think of around the $600 price range do not have the juice to drive the Ohms properly....LDF Mistral, Audio Refinement Complete(there are people who love this integrated, but I had two, returned the last one to the dealer because of an reocurring electronic failure, most likely related with the remote volume control and source switching)
Another integrated that is well made, the Blue Circle CS, that goes for around $1249 MSRP new, can get it cheaper. That amps has around 50 watts at 8 ohms.
Oh, the Portal Panache, has around 100 watts at 8 ohms, I saw one used for very cheap....around $700
check the ad
http://cls.audiogon.com/cgi-bin/cls.pl?intatran&1126374306This is a very well made, although not too pretty integrated. It should sound very good.
Those are the choices you have.