question about voidfall upgrades

going to late pledge for the voidfall expansion that just went up. I have the retail verison of the game now with multiple add ons (triple layered boards, some etsy trays and stuff from brain bucket games, the folded space insert). im going to buy the triple layered sector tiles my question is should i just upgrade to the galactic box? I dont want the miniatures but seems like all that won't fit in my retail box. its already not fully closing with what i have now. is there any other solution of upgraded the sector tiles without having to spend money to upgrade the box