Two more points to consider:
1) SIDs also provide terrain separation, so make sure you comply with any gradients or level-by instructions. (Incidentally, the removal of an ATC speed restriction on departure does not mean you do not have to comply with those level-by instructions. If going fast means you can't make them, then don't go fast!)
2) All these procedures can be circumvented by a helpful radar controller giving you radar vectors!
Good luck with the IR!
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"Take-off is optional, Landing is mandatory"