It sounds like your over-complicating the whole thing. With Windows 7 it's easy. When you get to the screen to select the drive, just select your SSD and then select the button labeled "new". It will create 2 partitions, the "Main" partition that you install Windows 7 to and a 100MB partition Reserved for the System. Click "Next".
I think Sanitary Erase is the program farinha meant. But you don't need to use Sanitary Erase with a new drive. If you need to re-install Windows it is recommend to run Sanitary Eraser. But Sanitary Erase will wipe the drive clean, so back-up all your personal files. Sanitary Erase clears every data block on the drive restoring it, as close as it can, to it's factory released condition. Every data block has a limited number (undetermined at this time) of times that it can be written to. If a block has been written to a 100 times Sanitary Erase can't change that.
You can use
AS-SSD Benchmark to check your disk alignment. You don't have to run the benchmark through it's tests, you just have to start it. If your alignment is Good it will say OK, where I've highlighted in red.
Is your drive a Agility or is it a Agility2?