Hi, Just done this earlier. Walk from Tube was only 10mins. Ticket collection was maybe 15mins and we walked straight through security so really easy. Staff are everywhere so dont worry about where to go.
Stayed at the hilton plaza round the corner the night before for 68Pounds and I think they still have rooms and you get to see alot of players milling around!
I was able to travel by bus to the tube then 4 zones on the tube and walk into Wembley in 46 minutes.
I walked a couple to the ticket desk this morning and there was nobody there at 7.30am, the queue to go in was maybe 30 people deep.
There's a lot of staff so security goes quickly provided you aren't bringing too many items in.