Remember, I'm just a nobody on the internet...
Are you sure that dollar amount isn't just for the consult? Often times, if there are concerns, additional testing will be ordered. For example--an echo to look at the heart, a skin biopsy (generally taken from the bicep area...it's tiny) to look for a variety of things, etc. (I don't have any idea how health insurance works in Canada.)
No, unfortunately a clinical geneticist can rarely tell you if you're 100% A-OK. On the upside, they generally can diagnose the 'big stuff.'
You can feel stiff as a board AND be hypermobile at the same time. It really is confusing, so I would see someone before having surgery if you're concerned.
Take care