Kuusela, Lajunen, Husso. And it's not simply a guess.
Very good choices from the finalists. Ramstedt was of course magnificent, but I very much doubt that he would have anyway had any chances to be the center in the 1st or 2nd line, and absolutely no use to use him in the 3rd or 4th line. Barkov and either of Granlund's brothers are most probably the centers of the two first lines, so no chance for Ramstedt there.
With Husso I could maybe think twice, as in my opinion Karhunen was even the better goalie in the most decisive games. Both were very good though, and Husso was steadier through the whole playoffs. I just happen to believe more in players that play extremely well at the right moments than players who are steady all the time, but don't pick it up a notch in the biggest games. But Husso still an acceptable choice for me anyways.
Kuusela should be at least tested, after the magnificent season that he had. And I think that there might be still more options for him to play as he is a quite speedy and experienced winger. Although I have a feeling that he will probably not fit in the final team after all.
Lajunen is really a no brainer. He is strong, fast, exprienced and a real winner. Last year's SHL champion, this year's FEL champion and 2011 world champion. He should fit perfectly in any role in the 3rd or 4th line.
Laine should be a definite lock for first two lines and power play. If Koojii will not pick him for the final team and will not give him also a big role, he is really as stiff and limitedly thinking person as I have seen him so far. I can only hope for the best...