It may be difficult to stick to just AA given your planned flying. As you pointed out, with AS you can credit your NW, AA, and DL miles to your AS account. In addition to making MVP Gold next year, with 75,000 miles credited to AS you'll also get the 50,000 mile bonus. You didn't mention it, but remember that the AS VISA card gives you a $50 companion ticket each year and using the card is now the only way to get the 1,000 mile online booking bonus. The AA online booking bonus is 500 miles. You might also want to look at getting an AS EasyBiz account to rack up even more AS miles since you own your own business now.