Well- I decided on a little different setup - with my SX Trius 814C, I added the SX mini-filter wheel with the integrated OAG attached to the Moonlite focuser which puts me just about at 146mm. No spacer added and no reducer. This is a totally new setup for me and I just got SGP. So, I have a lot of new stuff to learn going from doing EAA to trying AP. I still need to do the final step with the Moonlite on an image but adjusting focus with the primary mirror focuser before locking it down to use the Moonlite only.
It looks like many use the Celestron 0.7x reducer vs. f/10. It would make things easier for me to start given I would have a wider FOV to start. Is it worth the cost? I'm not aware of other reducers for the C11 other than the Optec Lepus reducer which cannot be attached to the Moonlite as far as I know and the hyperstar. This might be my one regret with the Moonlite focuser as I cannot use my hyperstar unless I use the primary mirror focuser. Images with the hyperstar (f/2) on the C11 are really nice.