Proof of funds + lump sum from friend gift deed + other options

I am US based applicant, and my friend who is in Canada wishes to sponsor me by transferring me the entire amount that equates to settlement fund. So my question is

  1. Is it advisable for a friend to sponsor me using gift deed for such a lump sum?
  2. I have 50 more days until to submit my PR application, will this transfer of lump sum event with a notarized gift deed have any chances of raising red flags or account to rejection?

What are my other options, please do advise.