The very same idea
I am going for 5 blade props though and they will be modern type shape not 'thruster shape' I know that there is very little lost in the thrust from modern shape to that of the thruster shape, I think rounded props look better.
(my choice and I'm stuck with it)
I may have beet you to one bit though, I have fitted tubes to the ASD units which I can then fill the unit with grease this serves two fold
1, lube's all moving parts
2, squeezes out all and any water ingress
3, makes them quieter
did I say two ...... There are three reasons for the Spanish Ooops wrong thread
below is the picture during the build, you can see the tubes from both main body and the drive bearing plumber block.
They come out under the accom and I use cycle chain lube in a spray can (nozzle fits tube just right)
R,