This sig is shorter so you can have two lines of text with it. (I've just scaled down to fit the height requirement as an example here, I would make the sig the full allowable width if I knew you wanted 2 lines of text in advance.)

It is only when you want to have two lines of text that the standard size becomes a problem and cuts off the bottom half of your text. You can always put one line of text in with the standard size custom sig images.

If I design your sig for 2 lines of text you can put the two lines stacked above or below the image, or you can put one line of text over and one line under the image.

I can also help you color match your typed in text with the colors of your custom sig, though not the fonts I'm afraid.