u/Impossible-Glass-568

I’m currently leasing and over 1,000 miles and still have a year and 3 months left on the lease. Buyout is 40k and I’m being offered 35k highest so far. Is it best to wait till lease is over and buy it out or try to finance it now or look for another vehicle now but be may be upside down 5k. I don’t want to turn it back in cause estimating how many miles I drive I’ll have to pay around 7-9k. Paying 640/mo