Convince me it's ok to not have floorstanding speakers for my mains

even when stereo music listening is what their primary purpose will be.

I've been wanting to pull the trigger on a pair of PSB Image T6s, but doing so means I make other huge sacrifices in regards to the size TV I can get and type/size of TV stand I can have (my living room walls and current furniture set-up is very unique and particular, i.e. unforgiving and not at all a "blank canvas").

So I've been considering other options, mainly a Def Tech Cinema1000 package. My parents actually owned this set-up from about 10 years ago (when I think they were still called the Cinema 100s and not the Cinema1ks, and definitely before they had the passive radiators) and they sounded great. The thing is, though, is that in that set-up they were used almost exclusively for movie watching. When I did listen to music on them, I found them to be sub-par, though I always thought that part of that problem was that they were ceiling mounted fifteen feet above ear-level. I definitely wouldn't do that: just have them on the tv stand at ear level.

So has this line made any improvements? Had any setbacks? Will the subwoofer take care of all my worries and it'll sound LIKE I have tower hi-fi speakers, or something close? Should I consider another option? Thanks in advance.

Right around the $1,500 or so that the Def Tech Cinema1000 package can be had for.

If I were to find a way to work/be willing to make those sacrifices of having floorstanding speakers, and get something like the Image T6s, I'd be willing to build as I go and just have the pair to start and then add a center and sub/surrounds down the line, especially because, like I said, stereo music will definitely be the majority of what I will be doing.

But are the Def Techs capable of being "a great set of bookshelves [that can] sound just as terrific as a pair of floorstanders"?

My room is odd, like I said. Recesses, bay windows, completely a-symmetrical. It's big, but no one wall in particular goes for very long before a turn or dip being made somewhere. Nice to look at, difficult to set up my stuff haha.

The rest of my equipment is only a CD player and record player at this point (just sold everything else I had to pad the budget for new stuff). Though I've made up my mind that a Denon AVR-2312 will be my receiver (can't afford amps and pre-amps and all that). I want a 60" or at least 55" TV, and the biggest wall I have measures 68.75", even though it's on a side of the room that runs over 15' in total length (like I said, dips and turns haha).

Budget is as described above, which is to say sort of flexible, depending. It does not include what I've set aside for the receiver, also.