Ordered interlux brightside white. This is not a bottom paint. If I am putting this on below the waterline (who knows till I splash her) I will end up with a blistered mess by fall when I pull the yacht.
Actually, that's not how blisters evolve.... so it won't be the end of the world. If part of your topside paint drops below the waterline, simply jump in the water every couple of weeks and wipe the scum off with a sponge or piece of carpet. When you pull the boat at the end of the season you'll have a very good outline of where the new waterline should be... then you can re tape it an inch above the waterline, fill in with bottom paint, then re set the bootstripe. easy speazy....
Now, regarding blisters.... don't worry. I know that sounds a bit cavalier, but if your boat hasn't developed any by now, it's unlikely to develop any at all.... but if it does, they are a very easy fix. Since you haul out your boat in the winter you can let them dry out and use the 3M kit for the repair...... I repaired about 50 blisters on my boat 12 years ago and have not had any recurrance of the problem... To absolutely prevent the recurrance of blisters many boat owners will apply a waterproofing "barrier coat" directly over the gel coat, then paint the anti fouling bottom paint over that.
Blisters occur between the gel coat and the laminate, there is lots of info on the internet, so I won't get too detailed. What that means is that your choice of bottom and topside paints will not be affected by blistering.... So.. I encourage you to rest easy and stay with your current plan. When inspecting the hull at the end of season you'll be in a better position to make any changes, if needed.