Just a thought... you're gonna beat fish up pretty badly with a forward livewell if you get into rough water.
I've owned two boats with forward livewells (Cajun MVP and Pro 171). Both of them dang near killed fish every time I would get into rough water. I prefered to squeeze everything into the rear livewell before running to ensure I wouldn't kill all of my fish. Now, that isn't to say that you can't beat up fish in a rear livewell in rough water too - been there, done that. But think of how a boat rides in the water. The most stable part of the boat is the pivot point right at the seating area, and immediately aft of it. Anything forward of the consoles moves up and down quite a bit. Add rough water and it's like putting fish in a washing machine.
If you still want to do it, I would ensure the liner is thick enough to hold the weight of the water you plan to add to it. If it's a thin "dry storage" locker, I would definitely pass on that idea. You would be better off rigging a icechest with a portable livewell system than risking cracking the dry storage liner, and dumping all that water (and several fish) into your bilge area while running.
In addition, the added water to the front area of your boat will cause it to handle differently. Both of my Cajuns were more difficult to get on plane when the front livewell was full, and the handling suffered a bit too.
All the best,
Glenn