Picking a speakers

Thank you. My room is 19'x11', but my speakers positioned on the 11' side, so I think it should be enough sound for me. Thank you so much for your time and help. I'm new to high end audio equipment, but I really love music and trying to figure out what would work best without breaking a budget. 

I’m using it 50/50 music and movies. Denon receiver and Denon 2 ch amp, that I want to replace for another 3 ch amp eventually.

Very helpful info — thanks! Assuming your AVR has preamp outs as you’re already using a stereo amp, if I’m you I hang onto that center and save up for a good separate stereo preamp (with a HT bypass feature) and amp. Here’s an excellent 5-channel amp at a great price, and if you only need 3 channels you might be able to biamp your 805s, which wouldn’t suck because they like power.

https://www.usaudiomart.com/details/650007959-mccormack-ht-5-power-amp/

IMO your first priority by far is to get that AVR outta the signal path for 2-channel because it’s a huge bottleneck to the performance your speakers are capable of, hence the stereo preamp suggestion. Simply run the front L/R preouts from the AVR into the stereo pre and when listening to 2-channel the AVR will be completely out of the signal path, and you can switch between stereo and HT with the simple push of one button — it’s a beautiful thing really. Just some thoughts FWIW.

I was thinking about bi amping all of them. What wattage per channel do I need when bi amping? My Denon amp is 220wpc stereo, I believe. I never use it really loud, but if I connect another amp for tweeter it's not going to burn the speakers? And what amp and pre amp would you recommend in my situation?

I see some Rotel RMB-1095 or B&K Reference 200.5 for sale. How those two amps compare to Mccormack HT5? And what preamp should I use?

I wouldn’t take the Rotel over the McCormack, and the B&K is probably really old.  Personally I’d go with the HT5.  But, and this goes for the preamp too, it really comes down to what sound characteristics you’re looking for and which are most important to you.  Would you like better or fuller tonality, more or less treble info, better imaging, more expanded 3D soundstage, etc.?  The more info you give about your specific preferences the better recommendations you’ll get here.  Be excited — you’re in for a real treat once you get these pieces put in place.  BTW, what are you using for a 2-channel source as that’s critical too.