well, im new here.....and im new to working out.......i have been working out for 2 months now.....but i have only been building my arms chest and sholders......and here is my first question...

1.when i train.....how manys days do i need wait before i should train the same muscle group again?

2. will training my legs help my upper body grow faster?

now the goals.....

3.is it possibe to grow my arm 2 inches in a year?

4.could i hit 300lbs by christmas?

i have been working out for two months and i have gained 23lbs....to a heavy 271lbs.....i eat a ton i shoot for 5000 cals a day......im not happy with the growth of my arms.....i hit them hard with 6 set of 6 reps of 35lbs dumb bells and then 10 sets of 10 with 25lbs db 3 times a week......but i have gone from 16 1/4 inch arms to 17" arms.....they still look small on my frame.....how can i build them faster? i wanna shoot for 18" arms in a year....can it be done?