Yeah I think that using GDrive/Google Docs should be the best solution since everyone has a Google account when using an Android device. +1 for that app! I will donate, if there is GDrive sync.
Please do not use (exclusively) your own cloud service as there are so many powerful services out there having APIs etc.
Motorola PT9, "Surf" :: Ericsson GH388 :: Siemens C25,S25,S45,S55 :: SE K700i :: o2 XDAmini :: Eten X500 :: o2 Diamond Pro :: iPhone 3 :: Motorola Milestone :: Samsung Galaxy S2 :: HTC Sensation :: iPhone 4 :: HTC One X :: Nexus 4