The 4 Note Solo
lesson teaches the 4 note pattern anchored on the second string along with a solo.
Link:
The Soloing Without Scales
course teaches that same pattern (now called Blues Block 1) and moves it around to other string sets and keys.
He then adds a note to the pattern (Blues Block 1+1) to complete a 5 note minor pentatonic pattern.
He then changes the "anchor" for a “right-facing” Blues Block 2.
And then introduces Blues Block 3 which is a Major pattern.
Each section has its' own new solo = 7 "4 Note Solos" in all.
The course also has the following additional sections:
Slurs
Bends
Grace Notes
How to find notes
Major Blue note tweak
SWS is an expansion of the 4 Note Solo Lesson.
In fact the complete title of the course is actually "Soloing Without Scales -"The 4 Note Solo""
So, no, I wouldn't see any advantage to doing one before the other.
SWS covers what's in the 4 Note Solo lesson and more.
But I would certainly check out both (as well as SWS 1.0) as he might explain things slightly differently?