I'm not sure "so (adjective) as (infinitive)" is a grammatical structure that's commonly used or used at all. If it is I would say it's wrong. I'm open to the idea of being wrong, but I even tried to look it up but found nothing. Where have you seen this structure used? Have you seen it a lot? We use the grammatical structure "so as (infinitive)" though, and it means the same thing as "in order (infinitive)". For example:
They left early [so as / in order] to avoid heavy traffic.
I'm gonna study early [so as / in order] to get ahead in class.
She likes to eat a lot during breakfast [so as / in order] to get a lot of the calories she needs early in the day.
"so (adjective) + (infinitive)" doesn't mean "in order (infinitive)", but it means "the fact that [I / he / they / etc] [do / did / will do] (verb) means [I / he / they / etc] [am / is / are / etc] (adjective)". I know that's probably not the most neat explanation, but maybe some examples will be better.
You're so stupid to fall for her tricks (i.e. that you fall for her tricks means you're very stupid)
He's so nice to give me flowers (i.e. that he gave me flowers means he's very nice)
I'm so naive to have believed him (i.e. that I believed him means I'm very naive)
If you need me to clarify anything just ask.