I never opted for the DL, or the EzUHF as yet. I'm currently flying on 35MHz. However, as I am considering a Wing I am now back in the thought process but will as likely favour EzUHF because I can source it here in UK and have good relations with the seller.
How comes you favoured FY DOS rather than the FY31AP? What is the difference between the two if any. I note that the 31AP does waypoints which to my mind isn't a must have. I'd rather fly and go on flying adventures rather than be autonomous throughout.
I also note that you have coupled the DOS GPS with the EzOSD making obtaining satellites quicker. Did you remove the EzOSD GPS off or have you just bypassed it with wiring. I'd be very interested in more information of how you have achieved it as makes sense to reduce weight, but imagine that the EzOSD As is and then the DOS gives two RTH functions, one being auto, the other a fail safe of the other should something go wrong with either?