There are three things you can do in H2H.
1. Start just MRs/RPs (If you get 4-5 you'll have no problem metting the innings requirement). You'll win ERA, WHIP, Saves more often than not. 7 Innings is a very low minimum. The risk you run is that if one of your guys blows up you will probably only win saves for that week.
2. Churn. Most people frown upon this, but it is effective if you want to win just Wins and Ks.
3. Normal. Approx 3-5 starting pitchers depending on the depth of your league, you staff, paired with 2-3 closers, possibly a MR. This is the only technique that allows you to win all 5 on a good win. Unfortunately, you can lose all 5. If you are down in Ks/Ws late in the week you can always grab 1-3 spot starts over the weekend to make a close comeback.
I use the 3rd, most conventional.