
My plan is this: collect enough guys for a 600-point Raid - in ASC terms, that's a smallish game, which would probably take only a couple hours to get through. To that end, I think I'll need the following.
Space Marines: 600 points
Commander in terminator armor
Scout squad
5-man Marine squad with a plasma gun
Terminator squad
...and now I have everything I need but the Commander. I'm thinking I may get him by buying a terminator assault squad, which would give me enough models to field any weapons loadout I needed in a single terminator squad, with a single dude left over to be the commander. The terminator kit includes some commander-y bits, but on the other hand I wouldn't be able to field 2 terminator squads simultaneously. I'll think about that.
Collecting for the Tyranids is a bit trickier, because they get models randomly from a pool and can get reinforcements. They start with 400 points, which means 10 "blips", so I think I'm going to aim to collect and paint a dozen blips' worth of Tyranids. I'm looking at the following
Tyranids: 400 points (10 starting blips plus 2 reinforcement blips at 40 points a pop)
3 tyranid warriors with deathspitters
8 genestealers (they're 2 to a blip)
10 termagants (they're also 2 to a blip)
...plus I got some orks cheap off e-bay to use as mind slaves.
Next step is assembling 5 scouts, 5 marines and 5 terminators, then I'll get to painting!