Hi Tree,
After I reviewed the model I sent back to you, I realized it was kindof out of whack with what you had already put in it and wasnt the result you were looking for... Really the base answer has to be doing this type of patch together modeling is going to be very tedious and difficult at best. Sweep is a tool that can be used to patch things like this together, but I would have to stop here with trying to give direction on where to take this. It's probably out of my modeling skillset.

Sorry.