1 very neat way that I have seen a throttle link done for the FZD is to obtain an old/2nd hand normal, steel top fan cover (the type you have replaced with an aluminium one) and very carefully remove the throttle yoke pivot from the steel cover, match it up to the aluminium cover and mark where it needs to go. With a power-file (or similar) remove the ridges where the mount needs to be, and then bolt the pivot to the aluminium cover. By doing it this way, you can use the original throttle cable. If you then get the correct length, adjustable throttle rod (and balls) from "Burlen Fuels" you will have a good looking throttle link, to match the rest of your engine. "Burlen Fuels" are THE SU carb people (the throttle link is a SU part) and you can get the rods in a selection of lengths. The beauty of using the SU throttle rods is that one end of the rod is R/H thread and the other end is L/H thread, (as are the pivot balls) so you can very finely adjust the rod without having to take it off (it comes with the appropriate lock nuts).
As for the choke, the FZD has an accelerator pump, and in the 5+ years that I have had a FZD (32/28 on my engine) I have never had the choke connected, or needed it. When cold starting I give the throttle 2 or 3 slow depressions (depending how cold it is up here in North Wales), count 5 and then crank the engine. Doing it this way allows the fuel to start vapourising---petrol vapour fires up a lot better than wet petrol. If you really do want to connect up the choke, you have to either get an extended choke cable---a Giardi choke cable MIGHT do the job---the Giardi is about 4 inches longer. If that doesn't work, you will have to obtain a 'cable extender' and fit that into the system just before the carb.