Sounds reasonable to me but your ferts are pretty high in K for veg and could lead to potassium toxicity over time. Too high in N for flowering too.
I don't grow in coco but have heard that it needs extra CalMag as the coco binds those up and makes them unavailable to the plant. There is very likely enough of both in your tap water but something to remember should you go with RO only.
I'm a huge fan of Advanced Nutrients and have been using them almost exclusively the last 15 years. Switched to their 2-part Sensi and Connoisseur a couple years ago but can't really restrict the N in later flowering the way I want so recently bought gallon jugs of their 3-part so I can go Lucas formula after the stretch. Other than that I only use Big Bud, Rhino Skin and some off brand CalMag for all my growing whether in soilless or DWC. With the pH Perfect nutes I haven't bothered checking pH for the last couple years either with no noticeable problems.