Fausto's given you a good start and I think 5 exercises will be fine. I think alternating exercises between sessions will help you cover all the bases.
Personally I like picking 2 pulling and 2 pressing exercises (if you do chest, back shoulder then you end up with twice as many pressing movements).
So you could do as follows:
bench alternated with dips
chins wide grip with chins narrow
incline press with shoulder press
row to hip with row to chest
and then for legs possibly
squats with leg press
leg curl with stiff legged deads
ok that's 6 exercises!
I actually just do normal deads in one session and then squats and curls in the other.
So that's pretty much as Fautso was saying, for progression etc then just follow the usual HST stuff as spelled out on the site.
Cheers
Rob