If you arrive in and depart the US in June, your next entry to the US late this year will mean that you're arriving after an absence of 6 months or less. So even if they don't allow you to use the reentry permit again, you don't really need it anyway and they should let you enter with just the green card.
EB3 ROW I-485 Approved: July 2007
USC: July 2013
I am a layman, not a lawyer. What I write here is not official or professional legal advice. In addition, my answers on this forum are specific to the scenarios discussed in each thread and should not be generalized to other situations.