Short Question about Calculating BackPlane Current

So I am working with a 1769-L32E and I have two input modules 1769-IF8 and one output module the OA8.

I know that you can only power 8 module with the 1769-PA2 but that you have to know what the total current draw is and that it doesn't exceed the power supply.

IF8 current draw
120 mA @ 5.1V
70 mA @ 24V

OA8
145 mA @ 5.1 V

Power Supply Capacity
2 A @ 5 V
.8A @ 24 V

So then total current draw is (120mA)*(2)+(145mA)+(1769-L32E mA draw)
And as long as that is under 2 A I am fine correct?

So my question is

Right,
but I usually check the hardware configuration with Integrated Architecture Builder http://www.rockwellautomation.com/rockwellautomation/e-tools/overview.page#/tab2

which you can download free from AB site

Thanks.

Do I will look into that then.