Nice first build. Since you have some experience, read through this: https://www.tdpri.com/threads/just-for-grins-a-draft-optimized-5f1.1088759/experienced NAVY ET
His directions are not that complete, but we build to learn in the end.
Specs on this meter 40nF to 4000uF. So they claim it is accurate down to 40,000pF +/- 5%.Klein Tools MM700 Multimeter