I 2nd this. Lightweight cabs all the way for me. I have a great sounding Mesa 115 cab, but can no longer lug the 87lb monster. I have a 500 watt class D, pushing 2 Neo 112's (27lbs each)I understand you not wanting to get rid of your 410hlf. I had one one and really liked it. Getting rid of it and moving to lightweight cabs changed my life. I switched to a pair of svt210av's, 22lb's a piece, and a GK neo212, 47lb's. Not lifting a 100+lb cab is a huge relief. But, I've got bad shoulders and I'm getting up there in age.
All of your choices are good on the heads. I like the GK MB500.
and Love It! Two 112's sounds better and is more responsive to my ear.
Brand names of my gear I left out of the post. I say try different brands of these new technologies and see what you like!