If you're not technical, how can you even know how hard or tricky the needed work is?
Taken to cleaners risk, technology sufficiency: I would choose to have faith, I guess. As both individual and startup, this is not the first time I would be taking decisions based on incomplete knowledge/information, and it certainly would not be the last.
Technical knowledge: A saving grace is that I am technical after all. Just a different discipline - that of putting spaces and buildings together. The hypothesis is that the principles of problem-solving are universally same - just that language, grammar, syntax and rhetoric are different. If I have managed to produce cinema and theatre using my training as an architect and designer - I am hoping I can pull it off for a consumer internet application as well.
Having said all that, a tech co-founder would be ideal - except that I do not have a shared non-work history with any - and this level of chemistry is essential for the travails of co-founding. It feels somewhat lame to go 'date' a potential co-founder, just for the sake of having a tech co-founder.