I've never tried to pull my starter in the boat, but maybe if you pull the header out of the way you can un bolt it, leaving the bolts in the starter until you slide it out. Other wise your lifting the motor high enough to get to it.
As far as what to replace it with, I would have what's there rebuilt. I run a mini starter on mine and I have to shave about 3/8" off the corner of the starter to clear the tunnel. I don't know if the Daytona's have more clearance, but in my Ultra, there's no way I see a stock size starter fitting.