even 30-40 mcg of igf-1 a day site specifically should work very well , just dont expect steroid like gains , they wont be seen below 200 mcg atleast .
anyway along with slin , igf-1 increase will be significant and u have a good combo of androgens going for u too , and as far as using thyroxine , have ur thyroid levels checked , if its below normal use it , or else dont even bother .