Same charger and batteries here. I normally charge them at the 1000mA default.
But consider running them through the 'battery forming' break-in mode first, just be aware that it takes a few days to complete. That will maximize their capacity and indicate the actual tested capacity of each battery on the display when complete. The next step is to match the cells with the closest capacities as pairs and mark them so you can identify them. I number the batteries with sequential numbers making up pairs. 1&2 are a pair 3&4, 5&6, etc. That maximizes the useful output of the pairs, the useful life of the batteries, makes it easier to rotate pairs so they all get used about the same amount, and makes it simple identify which is which.
If down the road you have a question about one of the cells, run the pair through the 'break-in' cycle again, or the faster less intensive 'refresh' cycle. Both of those modes will display the battery's true capacity once done. The simple charge mode only displays how much Amperage went into the cell during the charge cycle, not how much the battery can actually output.