I would suggest you experiment a bit. Like everything else with this hobby and the reason there is such a wide range is that we all seem to have our own preferences and practices that seem to work well for us. Here is what i found be a good rule of thumb.
For 5 gallons 3-4 pounds Honey per Gallon and Fruit in Secondary only.
Fruit guide is copied from
http://www.winning-homebrew.com/melomels.html
Days in Secondary are what works for the flavors I like. Rule of thumb if small seeds no more than 14 days, everything else but Citrus at about 30 days kind of give up all their flavor, Citrus can go longer.
All of these Fruit additions would take place in Secondary and all are for 5 gallons of mead.
24 30 Days
Blueberries, Cherries (Sweet)
Mild Fruit Character 5 lbs in secondary
Medium Fruit Character 7 lbs in secondary
Strong Fruit Character 11 lbs or more in secondary
Citrus Fruits
Mild Fruit Character 5 lbs in secondary
Medium Fruit Character 7 lbs in secondary
Strong Fruit Character 9 lbs or more in secondary
Pears, Apples
Mild Fruit Character 5 lbs to 7 lbs in secondary
Medium Fruit Character 9 lbs in secondary
Strong Fruit Character 11 lbs or more in secondary
Plums (use skins as well)
Mild Fruit Character 4 lbs to 6 lbs in secondary
Medium Fruit Character 8 lbs in secondary
Strong Fruit Character 10 lbs or more in secondary
8 10 Days
Raspberries - Blackberries
Mild Fruit Character 2 lbs to 4 lbs in secondary
Medium Fruit Character 6 lbs in secondary
Strong Fruit Character 8 lbs or more in secondary
Strawberries
Mild Fruit Character 5 lbs to 7 lbs in secondary
Medium Fruit Character 11 lbs in secondary
Strong Fruit Character 13 lbs or more in secondary