Despite being underdogs after the first leg, Angell is confident they can get the result required.
"It is [a big ask] but likewise we are capable of scoring two or more away from home. It is just a question of whether we can keep the door closed at the other end as Wellington are a good team.
"Things happen in such all-or-nothing games that wouldn't happen in regular season matches."
Angell says he does have worries over a couple of players, whom he declined to name, who have niggles and are not 100 per cent. However, he is confident they will be both be in the team for Sunday.
After such a result away from home, there is a danger Team Wellington's minds could be already drifting toward the Grand Final, and who they'll meet there, a danger that captain Bill Robertson is all too aware of, and has been confronting at training sessions.
"That's certainly something we've spoken about, but we must make sure that we perform to our best. If complacency slips in then that could be the undoing of us and they could well get a result.
"So, we've spoken about that and will continue to remind ourselves that the tie is far from over. Hawke's Bay are a dangerous side and we need to keep our standards pretty high.
"But confidence is high, we've trained well and got a great result last week so we go into this game confident that we can get the job done."
Robertson also said veteran Adam Cowan will be back in the fold after missing the first leg due to a wedding.
Team Wellington: 1. Michael O'Keefe (GK), 4. Tyler Lissette, 5. Bill Robertson (co-c), 6. Tim Myers, 7. Henry Fa'arodo, 8. Cole Pevereley, 9. Jarrod Smith, 11. Michael Gwyther, 12. Ian Hogg, 13 Alex Feneridis, 15. Luis Corrales, 16. Patrick Fleming, 18. Mickael Partodikromo, 19. Cory Chettleburgh, 21. Paul Ifill, 22. Daniel Clarke (RGK).
Coach: Matt Calcott.
Hawke's Bay Utd: 1. Joshua Hill (GK), 2. Wade Randle, 4. Ross Haviland (c), 5. Finlay Milne, 6. Ryan Tinsley, 7. Troy Pennycooke-Morgan, 8. Alex Palezevic, 9. Sean Lovemore, 10. Viktor Lekaj, 11. Mario Barcia, 12. Saul Halpin, 14. Rudi Bauerfeind, 16. Leon Birnie, 18. Billy Scott, 19. Facundo Barbero, 21. Sean Liddicoat, 26. Kyle Baxter (RGK).
Coach: Brett Angell. Ast coach: Leon Birnie.