An interesting design. The one big flaw I see is that this 150-ton ship has "type A" drives, which will produce Jump-1 and 1-G, but the stats list Jump-2 and 2-G. To fix this you could install "type B" drives, needing 9 more tons of space, and 4 more tons of fuel to keep 4 weeks of operating fuel. To offset this extra 13 tons of displacement, reduce the fuel processors from 5 tons to 1 ton (why does this ship need to process 250 tons of fuel per day when it would only carry 38 tons with B drives?), and take the other 9 tons from cargo.