fitting davits

Having twin aft cabins, locker space is at a premium, and the inflatable currently fills at least 60% of one of these lockers.... on top of this, I am planning on making a rigid tender that will also sport a sail, so that we can go dinghy sailing with the kids, plus row more easily...All of this suggest that davits make sense, especially now we have a boat that they won't look out of place on....However...I'm not really sure how best to fit them..Here's our transom...



you can see, we have plenty of space vertically, but the horizontal bit on the bathing platform has lockers in it, so neither strong enough, or sensible to mount them on here... the bit of transom behind the pushpit is sloped, and doesn't have any horizontal area at all...We can only afford the plastimo davits... these ones...

And so, I need to work out how I get them modified to fit...Current thoughts are:get a crank welded into them, and mount them on the vertical surface ie

this however, will prevent them from being able to swivel inwards, and will require their full removal to reduce LOA, plus i'm not sure about the loadingsalternatively, I could get a box made up ie

but this puts a largish stainless 'lump' onto the transom either side.... which may or may not be a problem... the base plate on the davits is 150mm dia, so the box will extend by 20cm or so....last, but not least, I could get the davits modified so that the mounting plate is angled to match the profile of the sloped part of the transom behind the pushpit ie

This does require carefull checking to see if the davits clear the pushpit neatly, and also has the disadvantage of putting them quite a long way forwards, and thus reducing the reach out over the stern..Any thoughts, observations, ideas anyone?