Dual Batteries?

I'm running a lot of extra lighting, as well as other things that tax the foreman's electrical system.

I'm considering adding another battery. The kit that Highlifter sells seems like it would work pretty good, but I'm going to use a full size battery.

I want to put an Optima yellow top in a rear cargo box and hook it up to the stock battery under the seat.

Now, my only concern is this.

Will the foreman's charging system (alternator/generator) be able to keep the batteries charged? Will there be any issues with the regulator or anything?

Any input is greatly appreciated.

Thank you,

-Tim