I would consider getting the lower powered of the two, or a used 250cc Kawasaki Ninja- more reliable, easier to get parts for, lighter, and good power to learn with. A bike more than 10 years old with low miles might have mechanical problems from years of sitting, and it will likely be difficult to buy parts for it.
A 60cc to 400cc scooter is a very safe first street bike- no clutch or shift lever so you can focus more on steering and braking, then move up later to a manual shifter. The weak handling and braking and power are good learning tools and will prevent speeding tickets.
I rode and crashed an automatic transmission 3.5 horsepower minibike when I was 8 years old. Then I went to a 30mph top speed, to 60 mph, to 105 mph, down to 95 mph, then 155 mph.
“Banking institutions have banished precious metals and substituted a more fluctuating and unsafe medium; they have withdrawn capital from useful improvements and employments to nourish idleness for the few, who prefer demoralizing pursuits to labors useful to the whole; the peace of the whole is endangered by evils more easily to be deplored than remedied." by Thomas Jefferson,1810 (edited)