Ranges that may be considered extreme tend to be in excess of 100km/s with dual propulsion (resistojet or NTR for combat and high-G burns, MPDT for orbital travel away from large objects). Given the heat this ship is radiating it seems to have a largely unused power supply, making an MPDT and defensive rail/coilgun good additions for it. This is also a very heavy ship for a payload of only 2 Striker launchers (assuming these are stock ones without a custom ammo count); given that it doesn't have any armour to speak of anyway, it might be made a lot lighter for the same delta-v using a smaller amount of a more efficient propellant (hydrogen deuteride is typically the prime choice).