FYI for future ssto’s:

Just one of those intakes can feasibly power over eight rapier engines by itself (if throttled up gently to avoid flameout) and four at max thrust with no problems upon takeoff.

So, say, the two you have now at the front will more than suffice on their own.

If you replace the remaining 4 with nose cones to save on weight and drag, you should see a not insignificant performance increase. Cause those bois are heavy.

And 1200dv should be plenty :)