So, err, it can carry 7 guys w jump packs or 10 guys on foot, three VTOLs per platoon. The 0.5t cargo space actually represents pintle mounts on each side w up to 500kg of medium infantry support weapons and ammo.
OMGwe'reallgoingtodie
VTOL
Base Tech Level: Standard (IS)
Tech Rating: E/C-C-C-C
Weight: 5 tons
BV: 70
Cost: 49,097 C-bills
Movement: 15/23 (VTOL)
Engine: 25 ICE
Internal: 10
Armor: 16
Internal/ Armor
Front
2/4
Right
2/4
Left
2/4
Rear
2/2
Rotor
2/2
Equipment
500kg Pintle mount weapons
Carrying Capacity: Troops - 1.0 tons
You can actually do this on 4 tons if you reduce armor to 0.5t, and only allocate 700kg to infantry, leaving 300kg for pintle mounted weapons. MPs go up to 18/27, cost to 40k c-bills, BV50.