If you are new and doing solo queues, I would highly suggest not getting WW.
A lot of people are unable to 1v2 a lane which causes you to leave the jungle and help them. WW is a horrible laner in my opinion. Once you get into the level 20's you will be matched up with hopefully more experienced players that are able to 1v2 and you can jungle more efficiently and undisturbed.
With my first purchase of a 3150 ip champ , I would either get Xin, Shaco, Katarina, Akali, or Nidalee.
You also might want to just wait for them to be free before buying them. I wasted around 10k ip on champs I do not even play anymore and I would suggest you do not do the same.