Town Bell, quick overview on setup?

Greetings all,
I haven't played since my little base was wiped, everyone keeps saying to get a Town Bell going, I believe a Town Bell will cover my area of operations completely ...but I have some questions.
I already have a p claim down around 1500m area, should i get rid of this?
If no, should the Town Bell be place inside of this claim?
Whats the monthly cost for a standard Town Bell? Is it 1220 silver ish?
Can a very casual player be able to keep up with the costs via Cotton Planting?
For defense, I think i read you should have at least construction posts with 1 thingy built all around the town claim area to prevent people to come in ..
Is this correct?
I haven't played since my little base was wiped, everyone keeps saying to get a Town Bell going, I believe a Town Bell will cover my area of operations completely ...but I have some questions.
I already have a p claim down around 1500m area, should i get rid of this?
If no, should the Town Bell be place inside of this claim?
Whats the monthly cost for a standard Town Bell? Is it 1220 silver ish?
Can a very casual player be able to keep up with the costs via Cotton Planting?
For defense, I think i read you should have at least construction posts with 1 thingy built all around the town claim area to prevent people to come in ..
Is this correct?