Using the Magnepan 1.7i with two REL S/812 Subs

Currently, I’m listening to my 2 channel system via a pair of Legacy Focus SE’s, also using a pair of REL S/812’s.  The system sounds great, but I’m thinking of replacing my Legacy’s with a pair of Maggy 1.7i’s.

The reason I’m thinking of going to the 1.7i’s is threefold.  One, my room is 14.5’ by 19’ and I feel that the Legacy’s are just too big for the room.  Two, I love dipoles.  Three, I just have the itch.

I have a pair of Clayton Audio class A, M100 mono blocks, which I believe will be perfect if I go to the Maggys. 

Additionally, I plan on using an external Xover rather than driving the Maggys full range.  This concerns me a bit, as I’ll need another set of interconnects, what Xover to purchase, etc.

So, has anyone any experience using the Maggys, with an external Xover, and a pair of subs?  Any thoughts, suggestions?  Difficulties I may run in to?

in advance, thanks for any guidance you may have.  Happy Listening!