I would be 50 on draw or away win (away team +0.5) should return 125 in return covering the stake for your parlay if it were to lose.
Some people would leave it as the last leg is a strong enough fav.
Some people would just take the profit so you get the same return either way.... 140 on away +0.5 would return 350. So total stake 210 = 350 whatever the result.
If youre asking which is the best, I personally think protecting the stake. But check the away +0.5 is around +150 as im guessing it will be.
Just wanted to say thanks. My out doesn't is hit and miss with Live betting, so I took the +.5 at +175 to cover my stake and guaranteed a small profit.