I think your nylon 14mm is a tad light--I use 20mm.
I have not read all of the posts but for short scope anchoring
there is one thing you should use--and that is an "Angel" or "Kellick" which is simply a thirty pounds iron weight, which is shackled on to the chain part of the rode
a couple of metres from the chain to nylon splice--which I prefer to be thimbled if practical--that is if it does not have to go down the hawse or spurling pipes.
An angel gives you a superior angle from the load to the anchor--so you can get away with a shorter scope. When it clears the water
you have to grap a lanyard (fitted to it previously) withn your boat
hook so that you gan lift
it out of the bow rollers and undo it--since it has to stay on the forecastle.
Over the years I have made mine up out of scrap steel
or iron shafting, as long as it is not sharp edged. Cast iron I like--even used weightlifter's weights on a large eye-bolt put through the holes and secured with nuts and washers as a shaft with nuts and washers. An angel also gives you a softer time on an anchor in a blow--not only do you have some give in the elastic nylon but the angel lifts from the sea bed
and eases the shock if the waves are getting a bit large.
For an all-chain rode
I recommend them--especially if the chain is only ten millimetres. An angel make it much easier on your cleats
bollards. A boat
surging back against an anchor well bedded will either strain the system or drag the anchor. An angel just makes it a bit safer.