Hi and welcome to the site!
Looks like boxes are 36 packs of 12 so statistically you could pull a complete set, but it's hard to say what the collation was like for that product back then, so rmpaq5 could be correct.
If you do buy a box and/or work on the set, please keep in mind what we have in the release notes here: "Set contains two each of #002, #350, #354, #357 and #358 due to misnumbering errors of #216, #061, #038, #267 and #138 respectively."
Also, doing some quick searching on eBay, looks like you could buy a complete set for roughly the same cost as an unopened box, guaranteeing you get the whole set but losing out on pulling the inserted Poster Cards.