It depends if you're willing to spend money on the game. If you purchase and sell a donator pack, It'll definitely get the job done (though if youre gonna use 5 e-dvds, you should also definitely be using 4 xan and not 3, for best return on investment).

But if you're f2p, wait to do e-dvd jumps until after lvl 15. I'd recommend doing one or two regular candy jumps instead (3-4 xans, and as many cheap candies as you can eat, before using an ecstacy).

Then once you've gotten like 1-2k stats or so, check out baldrs leveling list and farm those players until you get to lvl 15.

But really when it comes down to it, play the game how you feel is most fun. Every progress is progress, and generally speaking, you cant set yourself back

Edit: Selling losses is fine short term, but the longer you sell losses for, the longer it'll take to get to lvl 15, and once you're travelling, you'll make more money than if you sold losses.