The AOA110 and the AOA150 use the same ZG5 motherboard, with one caveat! Acer does not solder in any connectors that won't be used. Thus the AOA110 does not have the SATA connector and the AOA150 (presumably) does not have the SSD zif connector. The SATA port is there on the AOA110, however, as long as you either; a) solder in your own sata connector or; b) solder wires from sata cables
Note that you would also need to cut away some mounting posts that are in the way to accommodate the drive.
As for replacing the bottom cover and the motherboard, you would be better off just buying a full AOA150. Even new, the cost would be almost the same! (But yes, you can do it if you happen to have a spare AOA150 MoBo)