Potto - First, I would suggest 5 stocks at $10K rather than 10 stocks at $5K.
The choice of sectors is yours, but you could allocate some to a safe blue chip, some in a junior oiler, such as NEO or OPL, where you are quite likely to see a 100% rise in 6 months (NEO) - it's a speccy, but if it pays off, and I am a firm believer that it will, then you'll be very happy.
If you look at some in the bio-techs, there's a good chance that there will be renewed interest in this sector over the next 6 months, and there are lots of bargains around ATM.
Retail, I like JBH, but you may not want a retailer in your portfolio.
Really it's personal choice, but check for good positive charts - and I'd be disappointed with 13%!
Cheers