The second option could be made easier by instead making a "Multi-"Connect.ini whereby you list the databases, then when you load SIMS, it should just allow you to choose which DB you're logging into from a dropdown. You can even set friendly names as well.
I would expect the capita* service desk to be able to help you with the connect.ini if you have contract with them. If wanted i can try and give you an example, i just don't have it to hand right now