You will want more fuel than 2 liters in this bird. Tanks really depend on if you plan to install intakes or not (highly recommend the intakes, flown both ways and they do make a big difference!). Without intakes you can mount one big tank in the center, with intakes you will need dual tanks. Planes plus and Tamjets both sell tanks for this plane (single and dual) and I believe tam has some nalgene tanks for it as well. I'm running dual kevlar tanks for a total of about 160oz of fuel (12 min flights). I am quite heavy on takeoff but as you can see from the video, it's not a problem, just have to burn a bit of fuel before you can get real wild with it. Currently, I still have the p-120 in it, performance is better on P-160, climb out from alpha is improved greatly.... todd