Long term I'd wait maybe another month as the markets are going to fall a good bit more before they rise again. You should wait till about mid July then stick it all on a big mining company or one of the better banks, BARC maybe.
Also if you do wait till the market bottoms out it'll give you plenty of time to read up on the companys you fancy a punt on.
Also if you do wait till the market bottoms out it'll give you plenty of time to read up on the companys you fancy a punt on.