New points can have a non-conductive coating, with points "open", clean with electrical contact cleaner, allow to air-dry, then with points "closed" burnish them with a strip of clean white cardstock, open them and blow away any dust and fuzz with clean dry air.
New condensers can be bad "out of the box", unless an old one is proven bad, there's nothing gained by replacing it.
Is "air gap" set properly? A common business card works great for that.
Check that nothing is grounding out the low-tension side, in the points area, at the connection stud for the "kill" wire, and the wire to the coil.
Is anything connected to the "kill" terminal that could be draining off potential spark energy?
On some Briggs engines, it's possible to install the coil "flipped" with respect to which side faces the engine, or for that matter to install an incorrect coil. (Briggs calls 'em "armatures".)
For that matter, you didn't happen to install a coil set up for "E.I." with your breaker points setup?
Wouldn't have cost any more to have posted the engine model # and the coil part number, for that matter.