I think under the Maple is out. I also have Red Maple and the shade is too intense. As for west sunlight, that is fine except you can get more accumulative light "units" with t5 florescent indoors. Just a thought.
I think you guys are gradually talking me out of this. I have been pricing t5 light units for the high light plants. Maybe I'll just move the cyms outside til fall and call it good.