Panelized homes

Hi again !

Any thoughts on this scenario ?

Buy 3 one acre pieces of land on Lake Palestine, TX for 85000. One has a 'livable mobile home on it, 2 have services, ie water sewerage elec. All have a few feet of lakefront, all on a gentle slope to see the lake in all it’s glory.
move into mobile, build 3 panelised homes (surely 3 at a time would be cheaper than 3 X 1 at a time)
have movile removed, and move on ?

ps… oooppps… sell all 3 homes before moving on, of course !