After many attempts, I present a more optimised design and flight path for the current version. Difficulty: Extreme.
Design:
5 Stage, Twin Hawk Boosters, Twin Frontier, Solo Frontier, Solo Valiant, Solo Kolibri.
Take-off 5°
Ramping upto +10° Higher than recommended by the end of Stage One.
Stage 2 backing off to +5° than recommended due to less thrust.
Stage 3 Following recommended angle.
Just before peak reaches 30km, lean down to 90°.
At 30km, pop fairings, and angle down to +15° flight direction.
Once hitting LEO, coast, and aim down, slightly to the right of the screen. Once Flight direction matches, restart Stage 3.
Keep pointing in direction of flight, Stage 4 ignition.
Soon after reaching Earth's Escape velocity, aim ship for the same direction as Earth's Orbit.
Adjust direction slightly downwards from Earth's Orbit, and Stage 5 Ignition.
Fuel spent, separate last Stage, and coast to Mars Orbit.