Time On + PCT = Time Off is the guideline. Meaning if you did a 12 week cycle you wouldn't cycle again for another 18-20 week
Sustanon sucks for cycling and 10 weeks is too short.
Lean mass gain is from diet not steroids.
You ran tren and didn't know about Nolvadex, that's a pretty big red flag
https://forums.steroid.com/anabolic-...lomid-pct.html
You should spend more time on education, and focus on diet and training rather than thinking about another cycle before you've even got bloodwork done from this cycle. Honestly, if you can't make gains on 450mg of Tren then you suck at eating, training, or both.