Hey SGT Loken
In order to take Missile launchers in
Tac squads they've gotta be 10 strong, so they can't be minimum size. you could take 2
tac squads with missile launcher and flamer and then combat squad them and keep the
ML together and the Flamers together.
i'd use a Librarian as captains and command squads are points sinks
IMO
or use that biker chaplin with ur bikes for a serious anti-light infantry/light tank unit depending on how you load em out.
i've never used termies so idk about that (i have all my elite spots filled with dreads

)
if you could be more specific about the point level u'll be playing at, unit upgrades (on bikes, termies, and heavy support), and read the army list and point costs thread at the top of the page im sure some vets could help you out more.