Yes. Caveat here is that even upon lease buyout, you're still the first owner. The verbiage designates "registered owner". When you buy it out, you aren't changing the ownership, merely changing the lienholder from KMF to whichever financial institution you designate.
You're safe in doing the lease buyout option. Just make sure that you can get pre-approved for buyout from a credit union or broker beforehand. Prevailing rates i've seen are low 3's to mid 4% range but do find lower with exceptional credit.
Keep in mind, lease buyouts are beneficial when the savings from rebates EXCEEDS the amount of interest of the buyout financing.
That said,
If you lease it for 2 years and would rather finance less...
2 year 20k mile per year lease= 716 per month before taxes.
But, you get a money factor of 0.00095 which converts to basically 2.28%apr.
AND it gets the $5,900 rebate.
If you buy that out asap at the lease price of $40,527
assuming you get a good rate such as 3.050% you'll pay $3,873 in interest of 6 years and have a payment of $617 pre tax.
Thats a total paid of $44,424 over 72 months.
Now, if you take the incentive of $2500 (brings purchase price to $43,277) and finance at Kia's 3.050% APR you'll pay interest of $4,135 over 6 years and have a payment of $659 pre tax.
Thats a total paid out of $47,448 after all payments are made.
0% apr with a purchase price of $45,775 (no rebate) will have you pay no interest, on 66 Month term (Kias rate and term) you'll be $694 pre-tax
thats a total paid out of $45,804 over 66 months.
So this estimate example shows that you can save $1,000 performing a lease buyout.
Now the big question is: Is it worth the $1,000 to do the lease buyout?
Let me know as you have more questions.