I wasn't suggesting salsa for a halyard, sorry for the confusion.
Back to the halyard,
Your I dimension is 40.5' ALBERG 35 sailboat specifications and details on sailboatdata.com
So to go up the mast and down to the deck once, you need 81'. Call it 82 if you're cleating at the mast and 90 if you're using a mast mount winch and actually want a shackle attached to the other end.
You also need to measure the hypotenuse of a triangle, couple more feet, and if it's blowing, you'll have deflection from the breeze when you're trying to plug in the headsail. Not a straight line = more length. Point is 80' ain't gunna cut it. Not even close, and 90' would also be short imho.
BTW - your mainsail isn't exactly big at 275 sf.