Just a note on your Internet and how internet works as far as upload and download. When you watch a video your using your download component. Given what you mention you don't have a "Decent" download speed. Upload when compared to download can be quite drastic in ratio and is generally a small percentage. When you load to you tube that is your upload component. So as I am sure you know that is going to be about like watching paint dry to upload a video, so you may want to stay with 1080p for your family/friends.
Many people that Vlog have terrible internet on location, so they turn on the upload in the evening when they are going to sleep. Thus why I said to use YouTubes editor and their music sources. You can get thousands of royalty free music on site and add it to the video once the video is up there you can pick by Genre and Length as well as various other filters to match to your video. You are also using their processing power to do all alterations such as trimming and such and adding the music, so that frees up your internet and uploading had you want to adjust something down the road.
This is just a test video for my Zoom and Orbit function I had laying around, I uploaded this yesterday, I had really not used any thing other than adding music to my test videos and upload them to my test channel...on this one I selected the video trimmed it for length and added a background track, all which I googled to learn how to do using their simple editor on the fly and did all in about 15 minutes..So It ain't great or any fancy editing...but for the purpose of showing someone as I had uploaded to do...it works...best of luck.. I can guide you somewhat on how to do stuff on YouTube but just as easy for you to do a "How do I do this" and follow a onscreen tutorial off of youtube.