Can you afford WPI? COA for first year is just over $67k. If you subtract $5k and $28.5k that leaves $33.5k for first year. Unless the $5k is for study abroad that they have been adding to packages, then it would be $38k. Even with full Pell loan of $6k that still leaves $32k. With a FAFSA EFC of $0 that might be hard for your parents to pay.
Do you have an affordable offer at UMass - either Lowell or Amherst?