"Hispanics don't like weed" may be some bull**** anecdotal evidence, but it's not unreasonable to think that a polling average with a grand total of two polls may overstate actual support.
There's more evidence we can use, such as results from other states. For instance, in 2008, a ballot initiative in Michigan
legalised medicinal marijuana with 60% of the vote. There's been a substantial nationwide pro-weed shift since then, but Florida is more Republican and older. Overall, I'd probably put the over/under at a bit under 70%.
Regardless if it's truly at 65% or 85%, that still makes it extremely likely to pass.