Creating a pedal board sounds like a great project to tackle.
Unfortunately, I couldn't see any image you uploaded, sorry. If you can try to upload it again so we can assist you further.
But, in terms of outlets, it can be done provided you carefully cut out the holes so whatever outlet you choose will snugly and safely fit in it. Any outlet requires a junction box behind it, so choose a shallow one like the one below or in metal to cover up the exposed areas.
Anytime you are working with portable electricity, be sure all wires and connections are fastened and secured as well as can be.
For your handle, it is up to you what type of style you'd like. To view all handles that The Home Depot sells, please click here.
If you can, try to re-upload the image if you can. Also, let us know if we can assist you further.