I think lots of seatpost showing isn't the problem, but consider the geo your frame has, slack seat post angle and a long seatpost will give you a cosiderable setback position. Maybe get a seatpost long enough and ride as is (to check if it suits your needs) before you start splashing money?
This will need a long rigid forks to correct for the suspension travel, maybe put all the dimensions in the bikecad to check the geo alternation with the forks you'd like to put on it?
I think lots of seatpost showing isn't the problem, but consider the geo your frame has, slack seat post angle and a long seatpost will give you a cosiderable setback position. Maybe get a seatpost long enough and ride as is (to check if it suits your needs) before you start splashing money?
This will need a long rigid forks to correct for the suspension travel, maybe put all the dimensions in the bikecad to check the geo alternation with the forks you'd like to put on it?