EQ will crash your test production rigth away, which is why you want to replace that test if you don't want to feel like crap .
Your test levels are very high, and that's usually the limiting factor in dtermining how much muscle you can gain naturally. There are other things at play here obviously, but test level, diet, and training are probably the three with the highest impact. There is no golden rule for how much muscle you can gain obviously, but there are countless empirical examples...many so-called hard gainers have come before you and figured out how to overcome that. Maybe the EQ will help with your appetite.
Another thing to consider is cardio. Certains types of cardio done regularly, particularly moderate intensity steady state, can greatly limit the amount of muscle you gain.
Many people have run cycles without hCG, but it can increase the likelihood of making a strong recovery if you do choose to use it.