Needing Advice and Opinions (long text)

Hi all, I need to know if I’m the one being inconsiderate in my situation. To start with some background, me and my fiancé have been together for four years and engaged for one. We’ve been discussing marriage for a long while but never went public to any of my family about it. During Christmas of 2024 my cousin announced his engagement and their planned date, October 2026. At the same time my grandparents mentioned they were going on a cruise however I don’t remember any dates being brought up. Our original plan was to get married this year however we pushed back because my mother was upset with us since my sister was graduating college and we would be “stealing her thunder” alongside having a Disney trip planned to celebrate (it should be noted my sister didn’t care if we got married around that time since she graduated mid-may). We obliged and waited. Fast forward to may-June of this year, we start talking about wanting to get married sooner rather than later because it works for us and what we’d like. July 1st we got out and booked a venue for July 10th of 2026. Since my cousin is getting married in October we figured it was a decent gap between them. The first problem arose when I told my mother and she lost it on me. To sum it up she said I was inconsiderate and didn’t care about anyone down there (for context I live out of my home state, and so does my cousin. He is a two day drive while mine is six hours). She said I would end up having a “country bumpkin” wedding, that no one would come to mine, told me she was upset since she didn’t feel included and was very, very displeased that I wasn’t having a wedding in my home state. She said we were getting married out of spite and rushing all of a sudden, and that she couldn’t afford to make it to my wedding (she mentioned having enough for my cousins though). I told her I wouldn’t have the time to make constant trips down and would find ways to include her, that me and my fiancé would have a room in our house they could stay and regarding money my fiancé would like for them to come and enjoy the wedding; he’s paying for it. As of right now we aren’t talking much to each other as we couldn’t find anything to agree on and I asked for space to be left alone after what she’s said. She’s also sent me a guest list of people who would like to “need to be invited” even though I stated not wanting to invite people through obligation or wanting a big guest list. One last thing to note is she wasn’t thrilled when we got engaged either, or when I moved. Today we made a post sharing our planned date and now everyone is mad at me. I’ve been told already my aunt won’t make it due to financial obligations (her son is the one getting married so I understand). I didn’t know this but my cousins brother will be graduating highschool next year as well and that apparently my grandparents leave for their cruise the day before our set date; which we didn’t know either until it was too late. We didn’t do this out of malice or evil intent but since we pushed back once already we don’t want to keep planning our lives around other people so it’s more convenient for them. I understand where they are coming from however it’s our special day and we chose a date that is special and works for us (aka the date we met). Obviously we haven’t planned a wedding before but any advice and honest opinions will be appreciated.