FT-JC conversions

I was looking at the Jovian Cronicals website and looking at their
ships,
and after reading O.O.`s comments about the conversion posiblities for
renigade legion ships, have some thoughts along the same lines for the
JC
ships. The JC ships are equipt with mass driver cannons on turrets,
large
spinal mount lasers (discribed as being able to core a colony cylinder
in a
single shot), missiles, PDS, and embarked mecha. For these you would
have
the mass driver turrets represented as beam batts (or pulsars, that can
fire
at all ranges, long with 1D6, medium at 3D6, and close with 6D6, to
represent the added leathaty of the mass drivers as the range falls.
This
would require a recaculating of the mass/cost of the pulsars). For the
spinal lasers, K-guns would be perfect. Missiles, SML`s and PDS would be
the
kinetic turrets, and the mecha would be fighters. A idea to represent
more
primative (read delicate/vunerable) ships, we can have week/frigile
hulls,
minimal thrust (say a maximum of 4 thrust, with each thrust point at 10%
mass or more), no sheilds and limited armour (only one point of armour
for
every 4 points of hull). Has anybody tried playing with a set of ships
designed along these lines, because I won`t have the time to try these
ideas
myself.

Coment anybody (especially about the pulsars with the increasing dammage
as
the range closes)?