Matt, Let me help out if you don'y mind

Position sizes tend to be arbitrary based on risk tolerance. For argument sake.

You have $50k trading account, Normally it is not wise to exceed 10% of your portfolio. Can change depending on tolerance and stops.

So you have $5k per idea, Now if you keep your stop at 5% of entry, Max risk you take is $250 (Assuming NO GAP risk) 

$250 loss on 50K is only .50% 

Now if you told me, I am ok losing 1K on a trade, than you can adjust position size up to 4x, while keeping the stop on. 

Alway keep an eye on Volume, You don't want to get too large on a position if it does not trade at least 100k shares a day.  If volume is low, keep position size small too, you don't want to get larger than 5% of Average Daily Volume. So if it trades, 50K shares a day, most you take is 2500 shares. Even if that is below your calculated position size.