Hi: I have the same setup, and am wondering if you resolved your issues because my online host (wordpresswebhosting.ca) doesn’t offer an FAQ specific to this setup.
I built a wordpress blogsite using Artisteer template generator, installed wordpress to mamp and migrated blog entries from iweb into wordpress so I could then continue to use iweb to control the overall look and structure of my website; brooklynwarehouse.ca but be able to use the rss feed widget to embed a wordpress generated blog page instead of having to edit blogs on iweb and then have to upload the website everytime.
I’m having trouble finding any info on the process, but it looks like you’re doing the same thing.
Can you help? Thanks, Leo.