Here is an old thread from the C&V forum with lots of excellent fenders advice.
https://www.bikeforums.net/classic-v...se-things.html
On the rear, is there no bridge on either the seat stays or chain stays? Generally something can be conjured if those are present. At least you have eyelets.
Re: front end - are there eyelets on the fork tips? If so you should be set for fenders.
I have mounted a front rack with single center mounting tab on an mtb by simply running the tab under the fork crown and bending it up to the rear bolt hole. It’s rock solid, has a large Wald basket on the rack and frequently gets overloaded with too many groceries.
Otoh, if this is a long term keeper and you want to go the custom route, drilling the front of the fork doesn’t seem like a big deal to me.