Super Heavy rocket

#1
Description: My Super Heavy rocket. Tested in standard mode (reached Mars with landing and returned back to Earth) and in RSS: Spaceflight Simulator Real Solar System (SFS RSS) V0.1 (reached Mars with landing without use of parachutes, see screenshots).
Pros:
1. Good balance between fuel and engine (see description).
2. Medium size (no need in infinite build area).
3. Sufficient level of maneuverability (can be increased via rcs).
Cons:
Difficult to create independent (avoid fuel consumption) payload. Try to solve it.
 

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