Upright: I don't think Crown Golf was shipped in an "original" cabinet, it was likely a conversion from some classic game. (I could be wrong..does anyone know?) Either way, there isn't enough there to "convert" it back to anything that has value.
My vote: Upright: MAME IT.
Cocktail: Stern cocktails were very close to Midway cocktails, and Midways are the most liked design. Also Stern games were well liked by a few groups of people. Scramble was supersceeded by Super Cobra, both virtually identical games. You could put either in it. You're problem is only going to be comming up with artwork for under the glass. A glass top should run about $45 for a radius corner cut, frosted (sanded) roll-over edge, tempered at your local glass shop. Boards for scramble/super cobra are only around $10 untested (usually work) to $25 for tested/working. You have the controls it looks like, so it may be worth restoring. However resale value may be kinda low, but not as low as your upright, unless you do the bad thing and put in a pirate ms pac/galaga board, slap on some inkjet side art and try to pawn it off on unknowing new home wannabe owners for $900 on ebay.
My vote: Cocktail: RESTORE it if it makes economic or sentimental sense (i.e. you like the game) otherwise mame it and sell off the control panels on ebay and make a profit, and redo them in wood.