Can you explain why you are working hard to get the LMB out and then you plan to stock more soon after?
Since LMB are the most difficult mouths to keep fed, you probably cannot take out enough of them, unless you can also prevent the ones you didn't get out from successful spawning. They have no other predator except you culling them. In a 1/4 or 1/3 acre pond the right number of mixed sex LMB might be 4 or 6. It might be hard for you to know exactly how many are left so it is wise to keep culling.
If you could be sure you had only girl LMB that would be a different story. 6 LMB need 60 pounds of bluegill to grow one pound.
I'm a big fan of optimal food and would put in a plug for ordering some. Since you are trying to build forage and add pumpkinseed, I would consider a bag of each the Bluegill and the Bluegill JR sizes and mix them 50/50 and then rebag them. This gives a variety of pellet sizes for all comers in your pond.
Aeration is very helpful in many ways.
Pumpkinseed are a pretty fish. If you can find them, go for it! They won't overpopulate and will help control any snails that might show up in your pond.
