Yes deffo 2x 757s as myself and Jet2Impress have already stated!
One of the reasons i assume the 757 is sitting around is due to the slot times into various places such as PMI AGP and MJV, so 2x 757s are needed.
Recruitment has also been geared around 2x 757s and crew are currently being trained as we speak ready for the 2x 757s and 1x 146 arriving in a few weeks.
And this info in coming from a reliable source, since we both work for the company