Big bream personaly I would go to Ouachita. Now I say that for several reasons.

1 its closer
2 I baisicaly grew up on the lake
3 It is beautiful. No houses, condos, nothing but a few marinas, beautiful national forrest and clear clean water
4 Millwod is scary full of timber. I mean scary man. If you were a boat mechanic that was good at replacing lower units that is your lake.

Big bream I am not a know it all by any means regarding big bream. I just know what I know and most of what I know I learned from the knowlegable folks on this board. I do know that the bream will be comming to bed soon and they are easy to spot on Ouachita and VERY FEW folks target them. I would suggest you PM Jerry Blake and ask him his opinion. The guy catches fish for a living in the area you want to fish and I am just captain redneck He has been very nice to answer some questions for me. I am trying to scedule time to have him take me and my dad fishing soon. You might also want to look at the espn website and check out there outdoors section and then go to fishing hot spot maps. There is a good quadrangle map of both Ouachita and Millwood.
I will say that if you are comming in the next 30 days Ouachita is a tough place to beat to go and camp out at one of the many lake side camping areas or the hundreds of islands on the lake. You can fish all day and night stalk all night. If you do go to Ouachita let me know and I will send you some qps areas that we caught some of those 12 inch bream last summer and areas that they bed.