I like the concept of a podcast based on overcoming personal relatable struggles in life. I think this should integrate well with the current mix of content on your youtube channel. I also really think the shorter form factor ‘highlights’ from you podcast will work quite well on youtube.
Current podcast stats tell us 52% of podcasts are listened to on apple podcasts 19% on Spotify, 4.6% stitcher and the remaining 21% on other platforms including youtube.(link) This makes me want to recommend you looking into uploading your full form podcast in audio only form to some of these other podcast platforms to increase the reach of your content. I think this will help a lot of your potential audiences listen to your podcast as most times people encounter podcasts they want to have the running in the background which can be difficult on youtube without youtube Red.
I think That you can harness this content in a few more ways then you have suggested by posting small snippets of your podcast on twitter potentially of where the guest or yourself talks about the issue they are about to explain how they overcame. This should act as a bit of lure to come listen to your podcast as people like to have answers to questions they have heard/been asked.
Overall i really like your idea and with good placement and promotion I think you can go far with it. I would also challenge you to try and harness your snapchat to potentially add to your listeners in a non standard way.
Instagram something almost everyone has and has more and more people hopping on the bandwagon every day. It’s good to see you already have some established content on your page as a starting point for your DA. Your clear purpose of both presenting work and creating something beautiful because the works individually are. I also encourage the stepping out of your comfort zone to ask people if they don’t mind you taking a photo to help you diversify some of your content and gather content more consistent.
It seems like your portrait shots get the most interactions on your instagram page currently and i think it would be worth seeing if this has anything to do with the use of tagging people, hashtags or timing.
A couple things I would recommend on instagram to make your posts harder for people browsing to just scroll past is always the use of square or portrait images to maximise the screen space your post will take up in someone’s instagram. Also I would recommend only putting one or 2 hashtags in the description of your images and putting up to 30 on the image as a comment so your post still appears with those hashtags but people don’t have to scroll past the hashtags.