I'd recommend getting a technical founder on board, at a very generous share. The product will also need to be pivoted and iterated on a lot. With a freelancer, they might disappear with a halfway done job.
> they might disappear with a halfway done job
So? At least that is possible with a freelancer, not with technical founder who has a generous share but fails to render good results.
I know that most people won't build things for "equity" but it is a form of investment for the technical co-founder. That said, a lot do take salary as well as equity, and it's a balance between which they prefer.
There are some benefits - like being easier to gain investor confidence, if you do have a technical founder. I think that makes it worth it.