I made a long term plan that has been working on paper.

I want to position trade possibly for months on end; i want to risk 15% of the account to gain 30%. Its been working with a 60% win rate the past 1 year and 6 motnhs with 15 total trades. Balance started at 100k and now at 280k. Is this viable starting with 10k? I would open much smaller positions and already have years of day trading experience but never tried a long term approach