Hi scotty, I have a '99 F150 and online it says I can tow up to 8000lbs. I was thinking of getting a travel trailer and my question is how heavy should I go? Also how much does weight in the bed/cabin affect tow capacity?

if it's a V8 you can go to that weight it's listed as. But of course the heavier the load, the better it is to have a fifth wheel in the bed to tow with centering the weight.