for my coded boat we had a bruce anchor and chain/warp.
A number of issues became apparent,
The weight on a vertical lift does take some strength, I used to haul in using wave movement as the energy source ie haul in the troughs and let the boat do the lift!
safety, if the chain is big enough to get finger stuck in wear gloves and or be very careful.
line the locker as it will have your surface scratched up nicely if theres sand or anything in there.
Remember the weight before deployment, as it goes V fast when you lower it away and it needs therfore to be neat before you start.
I think chain for 100 pcent is possibly going to be a handful. Have you considered keeping the ballast and adding some chain as I am assuming that at present you have the boat balanced up and therefore only need to add a bit to offset the new weight?
hope this helps these are only my experinces.