Wow ... thank you so much, all of you. It looks like I'm a newbie to this forum, but actually I've been around Cakewalk from even the pre-SONAR days (ca. 1993 I think). That's the second time I've become a "newbie" here ... Bitflipper should know me as SONARtist ...
It's encouraging to hear that it would work ! I was somehow expecting issues with graphic cards not being able to support the native screen resolution. I currently work in 1920x1080 so going to 2560x1440 would be ideal.
Now, here's the thing. I've got a 5.1 quasi-fixed installation (a relic from the days of the surround "hype" ... not used so much now), so having a large TV in front of me is not feasable, as it would cover the front-mid speaker (and yes, I also thought a TV should make a great monitor).
But one of the reasons I chose to try a 49" was that the monitor is pretty skinny. Also, the width would not present any problems as the speakers are above the height of the screen, which incidentally is similar to the current height of my 2x 24" and not that much wider.
Who knows, I may actually revert back to only stereo someday soon and put a 65" TV up.
And it's good to see some "old" names here ... I learn something every time.