I assume that offset will put you close tot he TRD Pro which, I think, is +4. Is that correct? + 5 would be slightly more inward but shouldn't be noticeable. I bought TRD knock offs since I couldn't find Toyota TRD PRO wheels at a reasonable price.
TRD pro are +4 offset. I have the replika TRD pros from fastco and they have been great. I actually used them for my winter rims but liked them so much I replaced my limited 20" rims with another set of replika TRD pros as well (replika is also sold by toyota as an aftermarket rim option for winter tires here in Canada). Make sure you buy from a reputable and quality source, there are many cheapy knockoffs. also with the +5 offset you will have slightly less chance of rubbing if you are putting on AT tires on a non TRD pro trim
you want a manufacturer that warranties the rims for life for structural defects and a good number of years for painted surfaces