The best bandsaw blade would be carbide tipped, it won't get blunt quickly, like a regular steel blade. The downside is they cost a lot, and may not be available for a saw of your size.
The next best blade for ipe would be a bi metal blade(hss teeth brazed on).
Like Del said, with a 1/2 hp saw you are going to have to take your time cutting ipe no matter what blade you use. Just make sure the blade is sharp.
Before I had a powerful bandsaw, I remember cutting dense tropical woods, and all the smoke and black charred sawdust. The blade wasn't good for much else afterwards.
If you are ripping a large board into belly slats you would be better off using a tablesaw with a TCT rip blade. Even if the saw is underpowered you can do multiple cuts, increasing the depth of the blade.
Then you could save the bandsaw blade for cutting to outline, tapering the belly for rough floor tillering.