Football (soccer) program

[K0UTA]

I'm 16 I play soccer in an u18 league were my opponents are bigger than me, this is damaging to my game as I play in central defence. I want to gain as close to 10kg by the start of next season, my current season has just started so that's about 10 months away.

This is what I was thinking but I don't think working out each muscle group once a week will get me to my goal. The casual game is just for school so it's not serious at all.
M - pull
T - football
W - Legs abs
T - football
F - pull
S - causal match
- abs
S - GAMEDAY

I was considering working out additionally in the mornings that way I can't train more and maybe add another leg workout on Friday morning so I have the whole day to recover for the casual game on Saturday which im still expecting to be sore for but that way I'll be fine for Sunday.

Any thoughts or suggestions would help allot aswell as information on working out in the morning ( what to eat when to eat it etc.).
Thanks in advance.

Edit: Is 10kg realistic for 10 months?