You have planted a tree that in its natural range grows to 50ft tall
and 30ft wide. Keeping it at 4-5 feet is not very realistic. Obviously
it will take a long time before it gets too large, but its easier to
remove a 2 foot tree than it is a 30 foot one. Trees are an investment
and should be treated so- do your research! You wouldnt invest your
money in a stock you didnt know anything about would you?

Toad