This seems like it will work out very well! Just remember if you approach a hard day not feeling good, don't be afraid to just get out and ride. Your body will tell you what to do. It seems so simple but even elites ignore their body sometimes.
And
+1 on timing a TT and marking improvement instead of upping average speed. As I've read on here, "just get out and ride, the speed will come."
Edit: GOOD LUCK