think you said you had a PPL, Well add exams 3K CPL 7K FI 7.5K IMC would also be useful 4K but may to late to do that, looking at 20K to earn maybe 10 -15 p h. With all the hassle that goes with getting the ratings.
If you read his post he already has the Instructor ticket
I am a recently qualified instructor,
As said, not easy to get regular work on shifts, but with 16 days/month some schools may look at you, especially over the summer so persist.