I don't own any land.
I'm for this to keep cities from ruling the entire state.
I ask because you've advocated a requirement of 1/5th of an acre to be able to vote. But you wouldn't meet your own requirement (once you are old enough to vote). Few people my age would either; I rent my apartment, the bank owns my car...I don't really own anything, especially any land. That's why it wouldn't make any sense to require ownership of 1/5th of an acre to vote. Many people in cities, regardless of age, are in my same predicament.
I get it; you want this kind of requirement because then only rural inhabitants would be able to vote, thus only electing Republicans. That's why it is not a good idea.