It is really difficult to get full scholarships with that SAT score so aim a lot higher(2100+).
I also would like to share one personal experience with you. I was also planning on preparing for both IOE and SAT. I got into pulchok campus and that made me really not focused on applying abroad so I didn’t apply that year. But then I didn’t like the quality and the future of education here in Nepal, so I applied to US the following year and am preparing to depart this August. Due to that reason, I had to take 2 gap years and it is super boring when you have 2 years of doing nothing. So, preparing for either IOE or US totally depends on you, but be sure to have a clear goal from right now and focus only on one thing, and be sure to focus really really hard on that.
My personal experience: I got into Pulchowk AND I got into a good US college as well. So, I’d not say it’s impossible.