I'd say 30-50 defence, fairly decent armour and lp's but still cheap to run. 30 gives you Proselyte and turmoil, 40 you can get vengeance and adamant, 45 is still the Fremennik helms and 50 gives you rune and torso.
Unfortunately Jagex limited the Recipe gloves to their armours defence now and also removed the offensive stats on armour, so it's really just a decision on lp's and defence vs combat level.
To do well you want to keep your attacking stats similar levels to keep your cb low but your damage potential high.