Lease Extension in North New Jersey

[Chai Sag]

HI  My friends

I am looking for advice

Here is the situation:

I rented out a house and lease   ends on March 31/15

Tenant not sure if he is going to renew lease  because maybe he relocates out of State

He asked me to go on month to month until he actual moves ( it is his 1st year in the house)

In this city is very hard to rent out  a house from September to March ,therefore is not good for me this month to month proposal ( i would agree with him if he stayed a couple of years or more)

I wanted to offer him  a new annual lease ( exactly as we have it) with a clause that the tennat may move by 5/30/15 and the lease comes to an end, however if tenant stays beyond that date he has showed that he elected to stay in the house and lease will end at 3/31/16

is this correct? any problems? or what is a better solutions?

thank a lot