I was originally just going to build everyone's forces then put in a big order to Iron Wind, but with all due respect a lot of those models look...dated.
Yeah, this is why I so strongly recommend starting with the plastic box sets, and working with 1 box set at a time. While I really like some of iron winds stuff, they were faithful to the old art when making those older models, and the old art is dated indeed. The force packs with new minis and art are a good deal, and my go-to is to have everyone start by picking the force pack/mech they think looks the coolest. That way they will tend to get the most value out of those mechs, as there is almost always a variant that is good/playable in each era. We also do quite a bit of trading plastic among each other. The '1 force pack each' escalation really helps the hobby/painting people get into the game, as they have new mechs to paint as they go, and with group painting challenges everyone tends to stay motivated to put painted stuff on the table.
So for 35$ on the catalyst store for example, the Comstar forcepack with a black knight, king crab, mercury, sentinel, exterminator, highlander, will provide 2 5k point lists at 3/4ish skill... A highlander black knight sentinel, versus a king crab, exterminator, mercury. More BV with the units past introtech. Combined with 'a game of armored combat' and you have enough mechs for 4 people at 5k and skill 3/4, plus the introductory rules.