Jerome,
As one medical professional to another, life is full of trials and tribulations, stresses. Imho, if you have the budget for it, go ahead and try it. Life is too short for regrets.
In fact I have the same headache as you. An Ongaku has no balanced inputs which makes it a pain the arse but then again, that is what the designer wanted. It means locating everything nearby and creates an enormous headache as far as connections and room arrangement and this in a place I have just lived for two months.
You want to add in a pair of Westminsters and you have triple the headache. So much that I have spent the afternoon rearranging furniture to see what can be done whilst preserving a living room look which is also important to me (in fact more so than to my wife!).
I am going to demo the Ongaku next week at home hopefully so we'll see.
I'm not trying to get you to spend your money but let's say they turn out to be everything you need? WOW! I would like be a fly on your wall!
Take a risk. If it doesn't work too well you have many options available including making a decision to build a system around it. You can bring it round to all your friends and try it with their speakers. what fun!
You make me want to get a pair and do the same!
howie