Statement: This post is only the personal view of the author and does not represent the opinions of ALLPCB.com.
Antonio Rubio Llorca
You don't have to do wave soldering for the THT parts.
There's a technique called THR, which refers to through-hole reflow
that works for certain components like connectors.
If you mix SMT with THT , you may need to do wave soldering after
reflow soldering for single-sided board. Assembling pin in paste
connections by design is a way to avoid this problem. Hole size and paste
aperture size are selected to reflow the THT header at same time as
SMT parts. Consult with Process Engineers for best results.