[Mass Combat] Equipment vs Training cost ratios

[VariousRen]

My group has come into some money and political support, and we're putting together a small TL2 army to act as guard for a mining camp in a goblin infested swamp. If there's ever a proper assault on the camp there will be enough people on both sides that we'll be using Mass Combat to resolve it.

These guards also may come up on a personal adventuring scale too. We may draw some of them off to assist us with other matters ("Phil and two of the guards on duty go to investigate the strange noise" kind of thing) so it would be nice to know exactly what they have. Because my character in charge of all the logistics of the forces I would get I get to decide what weapons and armour they get(As a player I love the lonely fun of making up armies, putting together equipment lists, counting all the gold coins it's going to cost).

If I'm putting together an equipment list for the guards I'd need to know how much cash each soldier gets in equipment and how much of the raise cost is training costs. For heavy infantry the raise cost is 40k for 10 soldiers, and they take 4 weeks to train. If we assume that the soldiers demand status 0 pay over those 4 weeks that's about $750, add another $250 signing bonus to make the math easy and conservative. That leaves 30k (3k per soldier) in equipment and other unaccounted costs. Is this a reasonable amount of cash left over from the raise cost to spend on equipment, or is there another cost that I am missing?