In all honesty, I think that even if you do everything right, you'll only see minor change in size. And that for organ growth is overblown, it can happen, but if you abuse the **** out of it, like it goes with everything you abuse...
Igf des is for localised, lr3 is whole body. I realy liked lr3, it made me feel good, and pumped almlost whole day, and pumps in the gym were stupid. Best to take it during pct IMO