Two power amps for Magnepan 1.7i ?

I've got some new Maggies on the way after having gotten rid of my 1.6 qr's about six years ago because kittens.

I have an N.A.D. preamp as well as the c270 power amp. The c270 is rated 120w stereo and 300w mono.

Back when I had the 1.6's I had an opportunity to temporarily try bi-amping them and enjoyed the result.

My understanding is that you can't bi-amp the 1.7i's (forgive my ignorance but I think that's where one amp powers the tweeters and the other the woofers?).

I can get another c270 for around $300. My question is, is it worth it? I think that would mean bridging the amp to be mono and then using one amp for one speaker and the other amp for the other speaker.

When I had 1.6 qr's the one c270 amp was adequate in terms of volume but I did find myself turning it up to eleven...