I would think using as much of the existing structures/material would be cost saving.
The fabricator should join you ON THE BOAT and together you work out the details, take measurements, make sketches, templates or mock-ups as required and other details.
Its real important IMO to have the cheek plates of the roller assembly connected across the top so there is no way your anchor rode
can jump out if you get sideways. This can be a plate or a bolt.
Also consider how you will attach you snubber.
If your running lights are fitted to the pulpit don't forget to allow for the wiring
chase, and for gods sake, put the plates the lights mount to parallel to each other and plumb...I see so many boats with the lights following the same lines as the pulpit...drives me crazy.
You'll be way ahead of the game
if you can have your anchors with you when sorting out the bow rollers, Manson and Rocna
anchors are pretty particular.
Push pit details may include a bracket for your dingy motor
, chocks for a stern anchor
, fold out solar
panel brackets, life ring braket, an easy route/chase for GPS
or other antenas you may want to mount on the rail, those little corner pushpit seats I see on some boats look very practical...If you've been looking around you'll have some ideas about whats needed.
Pictures would be helpful.
No idea what you could expect to spend on this...way to many variables.