1 kit will be fine!! I have done GH 3 times, each time with 126ius. I always stack it with Test. I take 2 ius 5 on 2 off for 12 weeks. Now be advised, you will not bulk up. You will change your body composition. You will ad lean muscle, but weight gain will be minimal.
I would do this:
week 1 to 12: 2ius gh 5 on 2 off right before bed
week 1 to 10: 500mg of enanthate
week 4 to 12: 50 mg of proviron ED
week 13 to 15: clomid therapy
Optional:
10ius post workout 2 weeks on 1 off throughout with 10 grams of creatine and 20 grams of glutamine with 100 grams of dextrose.
If I got 2 kits, I would take the same dose for 24 weeks instead of 4ius for 12. I truely believe in smaller doses for extended periods of time!