SOS New to the forum, looking for advice

[Sunray]

"...Could be restored..." It's gotten really expensive to do that. There are no more complete stock sets(a walnut, rear, hand guard, goes around the rear sight on top, runs $40 at Gunparts), but it's more about the cost of all the wee metal bits and screws. One of the screws that holds the nose cap(sight base and bayonet lugs) on runs $3.50. You can see how that stuff adds up. It's money you will not recover upon selling either.
"...Enfield MK III..." Lee-Enfield No. 1 Mk III* made in 1916 and Factory Through Repaired(arsenal rebuild) at some time. Thousands of 'em were assembled out of parts bins with no QC of any kind. So check or have the head space checked before shooting it. That one is a bit rusty. Just surface rust from the picture. 0000 steel wool and light oil will take it off without damaging the rest of the finish. Don't fiddle with the stock. It looks in pretty nice condition.
The K98 doesn't have that issue, but it's not a bad idea to check the head space anyway.
Assuming both have good head space, you have a couple of really dandy hunting rifles. Both the .303 Brit and 8mm Mauser will kill any game in North America, big bears included. There's lots of good commercial hunting ammo for both. The only thing is the No. 1 will need to have the barrel slugged. Hammer a cast .30 calibre bullet through the barrel and measure it with a micrometer. .303 barrels can measure between .311" and .315" and be considered ok. Commercial ammo comes with .311" or .312" bullets(Reloaders can get cast .314" bullets from Montana Bullets). It's not a safety issue though. Strictly about accuracy. And no .308" bullets.