Presently we have a SS double bowl sink with garbage disposal on the left.

We're switching to the Blanco Anthracite right hand drain sink.

My question is this. Since we would have to wait several weeks for our countertops to be installed and don't want to be 'sinkless' in that time, is it possible to have all the plumbing done for right hand drain and reuse our old double bowl temporarily?

Both the old and new sinks are the same standard size except one has two bowls and the other one.

Here is a link that might be useful: Blanco Anthracite