Placed an "in stock" order Monday and I still see no tracking number in my account as of today Friday.
Is this normal???

I think yes because it is not an automatic process so it's possible back office is busy.
You can ask btcgarden on this forum and he can answer you quickly.
Yes I did get a response from them today indicating I will have a tracking number tomorrow. I should add here I am not impressed with the way they process orders and this is not to say anything bad about there units, based on the response here I will be very happy with my purchase.
But with that said if when I buy a unit from BTC Garden and I have to calculate what I owe to them and then not have that payment even acknowledged by even a single email is just UN-productive. Also I have to go back and send them proof of payment after I see it run through the blockchain. I don't want to compare them with some other company but Bitmain Tech seems to have this down and makes checkout much smoother.
I hope to see BTC Garden become successful as we all want more choice in picking our mining units, but I am just saying they need to improve check out.