Not detailed - Toys would be fine. No need to put the inventory on each box, the company type it up from your e.mail and sort it. They collected my boxes on the Friday (was worth paying for that)and they got here the following Wednesday but you can decide on that with the company. I would advise sending as much as possible unaccompanied. I ended up having a suitcase weighing 25kgs but luckily Qatar Airways did not charge me excess (£25 PER KILO) but my colleague who arrived a week later was charged for a few extra kilos even though the plane was half empty.
Give the company a call and ask to speak to Stephen, he will fill you in on the exact details.