$E_{launch} = 500\mathrm{kJ} * (radius + \Delta_v + 500)$
$Fuel_{launch} = 8 * (radius + \Delta_v + 500)$
$E_{launch} = (500 + radius) * \textrm{max}(stress_{hull}, stress_{container}) * 0.135\mathrm{MJ}$
$E_{travel} = ???$