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Very nice first light here Alan.
Congrats on your purchase.
You have your colours spot on!!
A good way to go when focusing is to find around a 2-3mag star near the object you intend to image, set your binning to 2xs, focus the image a bit at a time till you see the secondary spikes get as sharp as possible, then check with a 1xs binned image.
If two of the spikes are nice and sharp but the other two are not, this will be collimation.
The secondary spikes do help no end to find if you are spot on with focus or not.
If the night is super clear, and you still find the spikes are lacking sharpness, then check your collimation.
All good though and have fun with the new purchase.
Rich
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