No way they will be upstairs anywhere! My wife is the major obstical, all 120lbs of her!For sure! IRCC, my arms would just reach far enough around to grasp the front edges from behind....And...LIFT!
But getting them thru doorways that way, with arms out, turned out to be an 'issue'.
Might partially explain the burst disc years later....
I once hired UW varsity wrestlers to help me move, and they DID hoist them one at a time, each.
Maybe try a bit of cammo paint to 'sneak' them in place w/o anyone noticing?
Or go back thru the British 'funnies' from WWII for ideas?
Good luck!