Wow, lots of replies that I haven't been getting notifications on!
Thanks for all of your help!
I'll clarify a bit more:
The 35mm focal length isn't such an urgent necessity for me, I'm not missing shots and everything is ok
The 50mm 1.4 is usually my go-to lens (on FF), but I have been interested in shooting wider and getting in on the action. I also have the 17-40mm F4 for when I want to go really really wide, and of course it covers 35mm as well, but F4 is hardly F1.4
I'm actually not so sure how I would feel about 35mm in the long run.
Renting would be a perfect option if I weren't living in Israel, where lens prices are higher by about 30% and so are rental prices. Renting it for a week would just be not cost effective. So I thought I would buy it used, use it for a longer period of time (1-2 months), and then make an informed decision. If I would then decide to sell it, the loss of value should be pretty small, UNLESS the value of the lens will suddenly drop dramatically because of the 35L2, which I why I came here to ask for your opinion.
So I think I will indeed go for it and not wait around. I can't buy it via eBay because not many Israelis sell there, and if the seller would be outside of the country, the lens will be subject to customs, which means about 20% taxes. So I have to look for it on local forums.
Thanks for all your help!