SdKfz250 Detail Help Please

Hey folks

I'm doing a Dragon SdKfz250/10 for the Small AFV GB. Anybody wants to know how good I think this kit is, see my posts on page 10 over there

Questions: (model will be finished grey/whitewash so the period is Russia, Early)

1. Crew. My guess 3 for the gun plus a driver, or did the driver double as the ammo number?

2. Rifle Stowage. Standard 250's had a rack for 4, as does the kit, but if the crew is Driver + 2 + Cmndr, should I only have 3 rifles in the /10?

3. SMG. I think I have sen a pic somewhere of a 250/? with an SMG in a rack high up on the RHS, well forward almost underneath the 'roof'? It might have been a 251, can't remember. Can you?

4. Ammo Stowage. Was the 37mm ammo kept in the 'cupboard' over the fuel tank that std 250's kept the Mg34 ammo in, or was the arrangement different?

This was gonna be a quick build, mostly a painting exercise - I just can't help myself