The stock pump (if it's in good working order) and a regulated return will support up to about a 190cc injector (depending on the pump, injectors and tuning...this is the "ragged edge" for the stock pump). Spend your money on something other than a pump upgrade until you know you need one.
Between lots of marketing/advertising and lots of people just not doing their homework, way too many people have spent money on fuel pumps that are doing absolutely nothing for them except making their wallet lighter. We get the calls all the time from people wanting to order a bigger fuel pump, and when we ask what is done (or is being done) to the truck (so we can properly recommend a product), we find out that they don't need it...they just saw it in a magazine or heard about it from a friend and thought they should spend their money on it. A lot of people in this business would just sell them what they asked for, take their money and smile all the way to the bank (I know this because I also get the "I'm so pissed I was sold this pump" calls)...I just can't do that, I can't sell someone something that isn't right for their needs without at least making sure they know the facts.
From what I'm reading in your posts, you need to spend your money on a lot of other stuff before worrying about the pump. Once you have chosen your injectors and KNOW what power level you are really going to end up at, you will be able to decide if a pump is necessary or not. Hit me up then and I will make sure you get what you need, without spending more than you need to.