Sights, primitive or plain longrifle type with a flat top rear and copper base " dove tail" front sight with silver blade. I personally prefer the low style as did folks back then.
Since you got a pretty fancy stock you will want the curly maple stripes to "pop out gold" and the rest to be fairly dark. This is best accomplished with an acid stain like aqua-fortis.
Make sure you get the real stuff as some home made brews with the wrong type acid can turn the wood green. Some folks make an acid stain with vinegar and steel wool, barbed wire or old nails. The steel or iron used in the acid cannot be galvanized or stainless. The vinegar stain is a little milder than A-Fortis so it may take multiple applications. Research acid stain as this topic is complex.
Acid stain is applied then heated with something like a heat gun. The heat really activates the color. It will need to be neutralized with baking soda or it eventually it will turn maple black. Research this.
Since this is a 19th century gun you have many options in metal finish. Here's easiest to hardest.
No or little metal finish. The furniture and barrel should be filed smooth. You can even polish the lock bright. Then let the metal age on it's own or put down a light finish of cold blue to lightly gray it. When polishing do it by hand and do not polish away the details.
Browning. Browning makes the metal a dark brown. Some use a sweat box for this depending on humidity. It requires repeated applications of solution followed by rusting " sweat box" and carding "sanding". This is done until the desired finish is achieved. Make sure the bore is sealed and greased and the metal is clean. I like the heavy brown pitted look which requires more rusting between carding.
Rust blue. Same process as browning except the metal is boiled in water after carding. It produces a deep deep black.
Charcoal blue the barrel is literally heated in a trench of charcoal. Produces a translucent to deep blue black. Research this.
Rust blue with case colors. The barrel rust blue with the lock plate and butt plate case colored. This is how Hawkens and early cartridge guns were finished. It requires special equipment to case harden and is hard to achieve at home.
You can easily heat blue your screws by heating them with a torch until bluish purple and dropping then in a pail or cup of oil and water. A little cooking oil over water works well.
Bill is right for the most part about the English lock but there is at least one early Tennessee maker, 1790s who made Germanic style locks but this was early and rare on a Southern gun.
Some more option s for you to consider....
Mixing brass and iron. Some southerns are seen with a mix of hardware.
Taller hole or tallow or grease hole on the lock side of the butt stock. Some are simple round holes some are angled for thumb access some early ones are simply square boxes carved in the stock.
Poured pewter nose cap, It can be pain or finished like a chevron.
Butt plate omit. Some southerns are found with no butt plate. Some call these poor boys but many a fine southern gun was made without a butt plate.
Bone and horn stuff, Sometimes you find horn or bone inlays and nose caps, some times even front sights.
Iron patch box with a simple filed, spring nail latch.
If you research these southern guns you will find pretty much the sky is the limit.
Here is my 1810 North Carolina Gillespie, I did not build it...
Link Gillespie