By removing the cats you'll gain HP/TQ and additional exhaust noise.
You're probably better off going with a set of LT headers as for the money they'll give you even more HP/TQ gains then the offroad pipes do and they don't require any cutting or welding like the offroad pipes do.
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Nothing wrong with cat deletes. Cost around 400 and 100 to install.
Stainless Power would be my choice for LT's for best bang for buck. But install labor is costly. Some guys find deals but it's a 4-6 hour job and at 100/hr, that's almost the price of the headers. Or you do it yourself. Have fun.
You'll see about 10-15hp at the top end more with LT's vs cat deletes but under 6k the curves are basically the same.