WHEEL YOUR TRUCK AS IT IS. then and only then can you truly decide for yourself how far you want to take it and what the weaknesses are, and what you might want to change/upgrade. not to mention the fact that wheeling a stock/semi-stock rig will make you a better driver.
It is very easy to get caught up looking at a bunch of cool builds and start building something you don't really need, blowing a ton of cash in the process.