Some more thorough pics would help. Coz I don't entirely believe you.
When I was 19 I started training and weighed 72-73 kgs (161 lbs tops). After about 8 months (double your estimated time period) I tipped the scales at 85 kgs (187 lbs). And I was pretty well developed, not to blow myself too much...
Also, I was then, as I am now, 6 foot 3 inches tall.
So, your stats at 5 foot 10 inches? Sorry, but I have to call bullshit.
Of course you could whip out a current pic and prove me wrong...