Can I have 2 A races?

Currently not.

If there are two primary goals for your season you should evaluate following options:

1. If you have app 20 weeks for your first A-race, you can select this as A-race and then when completed start again by planning for your new A-race.
2. Alternatively, you are probably better off to pick your race furthest in the future as your A race, and then use the other race as a B race where you can select it to be a B-race with form optimization (and hence appropriate tapering and recovery)