Floor Patching Question Please Help

[tim21391]

i was working on my passenger side front floor support.. and i was air chiseling away at it..and since the metal was kinda tender i went right on threw the floor with it... and so i started cutting a square out of the floor to get to the floor support.. since i had to patch it now anyway i figured why not cut it out.... i had to cut the area of the floor that is countersunk for the cab mounting bolt... so now i have a big open hole... i got some sheet metal i got from my school for free and i used that on my rear floor corner... and now i was wondering.. do i have to order a patch floor to be able to have the bolt countersunk or can i just use a flat piece of metal and just have the bolt raised up a bit.. im putting dynomat in/carpet then floor mats...so it wont be that noticeable... can i get your guys input please