this isnt perfectly kosher i am sure, but if it were me i would get these rims
https://www.niagaracycle.com/categor...lished-36-hole
and then spokes from dan's comp. you have to call dan's comp on the phone and know your spoke length. they will sell you double butted stainless spokes with brass nipples for 40 cents a spoke. if you reuse your hubs you'll have less than 100.00 in the project. i build my own wheels but if you want to go to a bike shop they will probably use your stuff. you ought to get out for less than 200.00 altogether. the sun rims arent amazing but they will be better with a modern tire than what is on your bike now.
that's just what i would do, ymmv.