That is quite simple.
Buy a 18yo 90% FT attacker. Spend 250-280 greens onto him to boost his best whites to close to 200% and push his rating to 125% or so. He should be scoring for fun every match and gets lots of motm x4% awards along with his improvements in matches and training, and should reach 130% in 1 week or so. The 130% task pops up no earlier than end of week 1, so that attacker surely can finish the scoring and assist tasks, as well as completing the 8* player task some time in week 4 too.