15.54Combine secondary dominants and borrowed chords

Try:

Cmaj7 → E7 → Am7 → A7 → Dm7 → G7 → Cmaj7 → Fmaj7 → Fm6 → Cmaj7

Now you have:

• tonic
• secondary dominants
• ii–V–I
• borrowed iv
• smooth chromatic lines

This is becoming genuine arranging vocabulary.