Patience - its all volunteers on here and you only posted 25 minutes ago.
Have a little play with the configurator yourself - its makes the helpers / experts job a litte easier.
Also, what sort of daily office use do you do - large spreadsheets = possibly more RAM, lots of calculations / modelling etc - may require more processing power - things like that so as much info re use would really help them.
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Will it need to have good storage capacity or will it be connected to your works network and all your files are saved on the network? Do you already have the monitors? What make / model?