First of all, I believe the Runcrafting minigame, known as the Great Orb Project, is the best value for money. So get 50 RC ASAP! Train Atk and Str on RS gold Men from Edgeville. Move on to The Guards in the palace in Al Kharid, and finishing off with Flesh Crawlers in the second Stronghold of Secruity. The best location for Flesh Crawlers is in the south-east corner room.
Range: You could train at men too, and even at cows. Use an area that is safe between the two bowls of food south in the Lumbridge cow patch. After you've gotten to about 20 , you can move into the Minotaurs at the first level of Stronghold of Secruity. Find a room to your liking and safespot by the fence.
Iron arrows get dropped frequently , which means it's essentially free training. About about 40 to 50, you can train for a while at Hill Giants until 50. After 50, return to the flesh crawlers in that south-east corner room. They're located in the cheap OSRS gold square at the door closest to the wall. This is applicable to both doors. (You will easily be able to get 75 Str/Range from flesh crawlers.)