So sorry that Ohm is way off their game! I can tell you the Tall 3000 would work great in your space as they are some of the easiest speakers to set up. Having said that, my patience would have worn way thin by now and I would have moved on.
What is the equipment you’d be using to power the Ohm’s? And why do you mention the Klispch Cornwallis? They are so night and day different? While the spec’s they will work with 45 watts, they’re really happy with 200-250 watts and the Cornwall play amazing well with 50-100 watts being they’re 102 db sensitivity.
All the best.
JD