I'm thinking about applying for a few cards all at once and have been trying to decide which cards get me the most bang for my buck.

I noticed two different banks offer Hawaiian Airline credit cards (Bank of America and Bank of Hawaii) both which offer 35K miles with relatively low spend requirements. Can I apply for both to get 70K Hawaiian Airlines miles?

Also, I believe these 35K miles can be transferred to 70K HHonor Points. Which would be 140K if I did this for both cards. I see HHonors then has 2 credit cards, one through Citi and one through AmEx which would give me another 80K HHonors points.

So my question is, can I apply for all 4 of the above or will I run into problems doing so. Also, would it be worth more to keep the 70K Hawaiian miles instead of converting them to HHonors? A re HHonors really only a good deal if you use them for hotel reservation?

Thanks