reverend morrow's long keeper

[phantom_white]

I'll be growing around 20 Rev. Morrow's plants this year and had a couple questions that I need answered before I decide where to plant them.
1. RM is a determinate plant, so will it need staking/caging?
2. How far apart should I space them since they are more of a bush type plant? I know it really depends on how good the soil is, how much water the plants get, ect. I was thinking maybe 2 feet apart? Does that sound like enough space?
3. Does this variety produce an average number of seeds per fruit? The whole reason I'm growing this variety is for seed production, so let's say I need 7 ounces of seeds- would 20 plants be enough to give me close to that amount?

I've never grown determinate toms before so I don't really know what to expect from them...

Thanks for any help,
Abby