Okay today we've:
Checked all the packed boxes we had, took everything out, then re-sealed them tightly & counted them out.
Took out drawers/clothes, checked all nooks & crannies of dressers, upright closets & under pool table & stereo cabinet = no snake...
Under the bed is clear & it's brand new, so no tears (checked as well) in the boxspring..checked to see if he was squeeeezed between the boxsprings & under the mattress itself & against the wall (this is right next to his enclosure).
Tore the sofabed apart for the 3rd time & took all cushioning off down to bare frame = no snake.
Searched computer desk, printer, tower, powerstrips, speakers, drawers...no snake.
Searched the fake ficus again = no snake.
Going to get fresh feeders & re-bait all "traps" tonight, AND try the tape trick, PLUS the water dish with flour around them in each room downstairs here trick...heck, I'll even line up pennies on the carpet to see if he slithers across them...Really don't know what else to do but WAIT & listen...
Thank you ALL for your ideas once again!