Maybe I am wrong. Maybe I am not. I have not used this driver, so I can tell based only on the specs.
As strips are 24VDC you will have to put two of them into series to have voltage close to one that driver has (or dim it more then 50% which is a waste). In a constant voltage mode driver will give as much current as load can take (in this case 4.9 Amps). There for you have to connect groups of 2 in parallel. 4.9A/4groups=1.225Amps per group. This is maximum that driver can give. If output current can be adjusted as well as voltage, then you need to adjust output voltage to 48VDC and current to 0.7-0.9A per group of two (0.7 is better as it will give less heat end extend diode life).
Sums up: scheme that OP uses is correct, output voltage should be dimmed to 48VDC, output current should be adjusted to 2.8/3.6A.
p.s. I, personally, prefer to use constant current drivers as they are much easier to calculate.