yeah that level is brutal, i haven't even finished a time trial run on it yet
almost half the crates are nitros so it's not as bad as it first looks, but it's still the longest level by far, good luck in the ice cavern section lol
yeah none of the GBA games have levels with 200+ crates, let alone 300+
out of both GBA games, THA's "ace of space" (lvl 12) has the highest crate count, but is still barely inching towards 200 crates (ace of space has 194 crates)