Honestly I'd say stick with public / regular school.
Homeschooling requires a lot of initiative on your part to keep up with the work, and it will probably have a negative effect on your social circle. I found that Grades 11 and 12 were great for meeting a lot of new friends.
I've thought of doing the same thing now that I'm in university. I played around with the thought of taking a really light course load to get some more time on the hill in, but honestly all it's doing is hurting you.
Personally, I'm just going to finish my undergraduate degree and then spend a season or two ski bumming before joining the real world.