Learning Japanese

I Have a Serious Question
If i was to Study Japanese for 2 1/2 years (No Classes Just Self Study)
And Following a Schedule of
Study Japanese Writing every Other day for 30mins-1 hour
Study Japanese Dialogue every 0ther day for 1-1 1/2 hours

How well/good do you think my Japanese will be?

I ask this cause Im about to do just that cause i plan to go to japan for a whole year during my Junior year