A Silvers Pad looks about as nice as any you could choose IMO.
If not a hard kicker Kaliber I'd stick with a steel contoured butt plate like the originals. It doesn't have to be a trap style, some didn't have that feature.
Smooth faced, nicely contoured to avoid any bulky look and finished w/a touch of engraving around a border line cut is nice.
I've recycled orphaned, rusted and abused Winchester checkered steel butt plates for such. They are plenty thick to belt grind and file the checkering (and pitting) off. They have a 'peak' at the top and you can re-work the contour very easily when they are at red-heat.
There must be other new mfg 'in the white' steel butt plates around for the custom rifle mfg crowd that would work well. Or something that is adaptable by re-working it.
Check some of the M/Ldr parts dealers. They often have butt plate repros for early cartridge guns or something that can be of use.
Track of the Wolf has this Winchester 1885 Shotgun steel butt plate repro (cast) that may be workable as an example.
http://www.trackofthewolf.com/Categories/PartDetail.aspx/700/1/BP-WIN-85-SH-INice looking Enfield project rifle!
Scopes and mts I can't be of much help I'm afraid..