Sentence:  [...] and at a great <WSD>foredeal</WSD> already; [and as for] such <WSD>foredeal</WSD> that they despair not of the...a deal, but that through the help of God, [our Grace and] other good ministers, these personages which [shall be now] sent shall undoubtedly conclude [...] 
Meaning of the word marked with <WSD> tags:  An advantage; benefit; profit.