DWI_B - incorporate config options indicated in Jenya's comments

[aiavenak]

There are several configurations that are currently hard wired in the last two sections of DWI_B.
Jenya has left some comments about how those configurations could be specified by the user.

Some group discussion may be needed before those settings are made available in the config file...

[aiavenak]

See for specific example of config setting that needs to be added as a user setting: #28

[echumin]

This still holds. Will need to revisit in the future.