I am wagging a parlay for the day,
Napoli vs Red Bull Salzburg, both teams to score
Valencia vs Lille, Valencia to win or draw
Liverpool vs Genk, over 2.5 goals and Liverpool to win
Borussia Dortmund vs Inter Milan, under 3.5 goals
Barcelona vs Slavia Prague, Barcelona to win.
I check the odds for all those match and it seems that the odds for your parlay is not that big, still less than 4x (checked on Fortunejack). I think it is not worth to risk your money on 5 matches for low odds,obviously it is your own money so you can go with it. Just stating my opinion as I like to bet on parlay as well but I prefer to have bigger odds. If I have to bet on those 5 matches then I will choose:
Napoli vs Red Bull Salzburg - Napoli to win
Valencia vs Lille, Valencia Under 2.5
Liverpool vs Genk Liverpool win 1st half
Dortmund vs Inter Double chance Draw/Away
Barcelona vs Slavia Barcelona to win and over 2.5 goals
Those selections gives me odds more than 12x so it worth enough for me to risk some money on 5 different matches.
The point here is that I prefer to bet on less matches for odds less then 5. Of course we have different style of betting, just sharing my opinion.