Since your an F2P,there is no point in getting more than 40attack & do as much strength as you possibly can.Keep your defense at 1,increasing your defense will be a mistake because you could very well get strength levels instead of getting those defense levels. The thing with prayer is, it depends if your comfortable in switching it on/off before & after fights & it drains quite quickly so recharging every few minutes.Keep prayer at 31,you don't need more since prayer also gives combat levels.If you ask me,then raise pray to 31. Magic also comes into play later on when you eventually have to hybrid because of the rune fulls,when your about 55+cb.That's when Fire blast is useful.