MAN-MCO July 2015

Hi all,
I am looking at MAN to MCO in late July 2015 for 7 (during school holidays) in PE.
At the moment I have 5 PE combi fares on hold for 175,000 miles plus £5100 for the return legs & fees (both legs). A full PE revenue return is currently coming back at £1678pp.
As I guide, I have previously paid c£900pp for a PE revenue return in October (no miles).
Do I pass up on 5 reward seats?! I have another 100,000 miles available if needed but will so many reward seats appear again? Or...I am just looking way too soon?
Any advice would be greatly appreciated...
I am looking at MAN to MCO in late July 2015 for 7 (during school holidays) in PE.
At the moment I have 5 PE combi fares on hold for 175,000 miles plus £5100 for the return legs & fees (both legs). A full PE revenue return is currently coming back at £1678pp.
As I guide, I have previously paid c£900pp for a PE revenue return in October (no miles).
Do I pass up on 5 reward seats?! I have another 100,000 miles available if needed but will so many reward seats appear again? Or...I am just looking way too soon?
Any advice would be greatly appreciated...