We used the safety sleep from 6 weeks as the end of the cot was raised and he (well both actually) kept falling to the end under the blankets
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We never wrapped Leah....she hated it, Joel loved it from the start. We used flannel wraps (winter) so long as it wasn't stretchy as he could get out of the stretchy ones. In the end we got a miracle wrap and that was great. He was in that till 16 weeks, then I started leaving 1 arm out (hes a thumb sucker now so I don't have to get up for the dummy), then itstarted getting to warm so we ditched the wrap altogether, hes still in the safety sleep but not for much longer, he gets out and wanders around the cot!!!!
His legs were wrapped longer than his arms as he flaps his legs up and down to kick the blanket off, when its cooler he is going into a merino sleepsack to keep warm.