Killan,
I just pulled my lower unit off yesterday.
But mine is a alpha one,generation two.
I have a total of 6 balts to take off, 4 nuts, two on each side of the unit. and one bolt in the front, and in the back you have to take the plastic cap off and use a allen wranch to take the bolt out that holds the trim tab zinc plate.
Never pulled the upper unit off, but im told you need a tool to get the exhaust bellow on.
And yes, make shore you put the shifter in forward gear.
Good luck, Paul