Depends on whether you value your bike and whether you can replace it yourself if you stack it on a corner etc. I was TPFT on my Ninja when I first bought her in Aug 2007 because I couldn’t afford FC. I was nervous riding her though in case I wrote her off, so in the December I upgraded to FC, it was £250 cheaper because of the time of year.
The quote you got isn’t bad to be honest…I’ve seen a lot worse.
If you can get away with not using your bike for a couple of months, keep it locked up in a garage and pay for temporary insurance at TPFT. Then when you get to December get another quote, you’ll notice a big drop.