First and foremost welcome to the club. Gear will be cheap and you will tempted to run grams of it. Don't
On the business side. Keep Test C and Tren E close to 250mg at most. 300mg is pushing it and it will (literally) bite you in the ass even if they don't crash (Test C WILL crash on that concentration in the winter months)
You have everything else figured out it seems, I would add the BA/BB after you reached max target temp and you have dissolved the raws with the oil only, they won't get damaged per se but BA/BB vapors are annoying. Filter warm -not hot it will go faster.
As for terminal heat sterilization, it's not necessary, I would only opt for it if I was forced to work with open vials that I had to sterilize myself as an added step.
Tag away, happy to help when I can