As I recall from my days flying a 206, there is no danger in waiting for a higher N1 before introducing fuel - in fact, higher is better, but you'll seldom get that much.
To start a B model, I rolled directly to idle, then pressed the idle release with my thumb, trying not to move the throttle. Having the throttle a little above the stop shouldn't be a big problem. After the start, roll on more throttle to make sure you're above idle. It doesn't take many flameouts to learn this. If you don't have the idle stop depressed, it's really, really easy to have the throttle pressed hard against the stop, and pressing the release may have no effect, because of this. Just don't let go of everything until you're certain that you're above idle with the throttle.