I think Atalanta is far better in all aspects compared to the Milan atm. I do like how man on man's marking strategy by Gasperini. It's always doing very well in the big match, and i expect him to do that again soon. They get 2.06 for a home game, that's very tempting odds, but the gap to ward Milan is not that big.
To bet on 1x2 Atalanta which is very dencent consider we can double our money. 2.5 goals are even offered less than 1x2 Atalanta, but as you said, it's likely to happen. I personally wanna choose a direct bet to Atalanta instead of consider other options.
If we will watch the stats of Milan and Atalanta football team then we will collect the data that Atalanta full strength football team is always favorite. Atalanta full strength football team is ahead in points table and have upper position in table and have 31 points on table after winning last match and that team is one of the best team of this tournament. Milan full strength team is very lower in position. Atalanta head to head record is perfect because that team won 2 matches out of 5 matches and Milan team won one match and two matches were draw . So from all sides Atalanta is perfect team to win this match.Atalanta recent matches performance is at top and they won all matches and got 2nd position on points table.