This is the same mount I was using several years ago for 23 through 6cm EME.
After considerable discussion with G3WDG I have decided to go with linear polarisation on 3cm, so I can use my Chaparral feed, which is well suited to my KTI prime focus dish. It is easy to change from vertical to horizontal polarisation with the way I have arranged the focus box in the cage.
I have been promised a potent SSPA but I'm still waiting for the DL/PA0 LNA. In the meantime I will probably try my Octagon LNB-based LNA in front of the frequency-locked DB6NT G3 transverter.
The biggest challenge is still going to be tracking and I'm going to try a simple system used by both G3WDG and G3LTF. This system combines moon noise tracking with a tweakable auto tracking arrangement. The Spid RAS tracking system will be uncoupled and used only for approximate position indicating when on 3cm.
A remote digital inclinometer gives absolute moon elevation as a back up and confidence booster.
I hope to re-install the 23 and 13cm system on the dish in due course.