Help with invitations and etiquette: Destination wedding, At-home Reception, Bridal shower

Hi!

I'm having a smallish destination wedding in Hawaii next Feb. The majority of my extended family is not invited due to how many people there are, so we are having an at-home reception (where I grew up, not the state I currently live in) afterwards for all of them as well as family friends.

I sent Save The Dates in Jan, so people would have plenty of time to plan. My mom and godmother are hosting a Bridal Shower for me in September where they live (not the state I live in). My plan is just to invite family friends and family to it as I have no friends left there - all of my friends live in different states. So those invited would include a few people invited to the destination wedding, and all of the people invited to the at-home reception. (All of the women, anyway).

I am not sure when to invite people to the at-home reception. Do I send invitations a year ahead of time? Separate Save the Dates? Can I invite the people to the Bridal Shower, who know nothing of the wedding or at-home reception, and then invite them to the at-home reception later? (As in, the traditional 8-12 weeks before the event, but this is months after the shower).

Thanks!