No.4 Mk.1 scope recommendations?

Having pondered the idea of scoping one of my Milsurps, due to failing eyesight, I have decided to scope one of my Enfields.
My Mausers would need drilling and tapping, or else, a "Scout" mount. I have tried out a Friends scout mounts. Long Eye Relief is no good for me.
I have 2 Enfield mounts that I have had since the late '70's.
Both simply replace the rear sight, with no altering of the rifle. Weaver rings, I think.
I used these on a modified "Jungle Rifle" with great success in the late '70's early '80's. Both locked down and held the scopes on "Zero". Not because of failing eyesight, but just to pick out a White tail in the foliage of hunting in North Alabama.
I want to be able to dial it in at 75 to 100 yards.
I have years of experience with scopes on .22's, but not much on center fires.
What power scope do I need?
The rifle is a tack driving BSA #4.
I don't want to spend more $ on a scope than the results are worth....

I would get the no drill mount the steel one not the aluminium one first off then a Leopold 1-4 power 25mm tube scope as you say 75/100 yards in scrub there is plenty of zoom in that scope it is a short bodied scope so wont get tangled in foliage and you wont need anywhere near it's elevation/windage range at those distances. My friend had one mounted on his 460 Weatherby Magnum sadly it could not handle the recoil of 108 ft/lbs so carked it but the venerable 303 develops less than a 5th of that recoil so there will be no probs.
In fact I have the same combo sitting here ready to mount up when my eyes get to bad for the open sights on one of my No.4's.

You could use a fixed four steel body Weaver scope like a K4...simple and tough.

Just fit a good, solid, no drill mount to the rifle with picatinny rail, available from Brian at BDL Ltd in SC and get him to fit a reasonably cheap and cheerful Chinese 1" dia or so adjustable scope. Get him to sight it in to 100 yards and to tell you the clicks to bring it down to 75 yards.

It's as cheap and simple as that. Cheap and simple but best of all, tough and reliable too AND he'll do it properly!

I like the Armalon No.4 mount because unlike the S&K and Fulton's mounts, you do not need to remove the scope from the mount to fit or remove the mount from the rifle. And of course it's made of steel.

Best option I've seen for a no drill & tap mounting.

A fixed power scope will be best, 4 or 6 power would be ideal for your desired range.
Fixed power scopes will have the best glass quality for the price, plus are more robust with less internals to break.

Try not to pick one with a very fine reticle as it will become "lost" when viewing through brush or in low light or both!