Adobe Premiere Pro is a good editing software.
you can do almost anything with it as long as you can figure it out.
Basic editing and graphics and other effects are pretty easy to learn at first.
I have tons of footage on my computer I just need to edit it and upload it.
What I recommend is fish about 10 - 20 times (enough for 10-20 videos) to get good footage.
then start editing the videos on your non fishing days.
If you fish and edit on the same day it will get tiring really fast.
Go Pro also has a good simple app for making videos. there's not much you can do on it but it is free and easy to know out a simple video in a few hours.
Plus Im sure you know how fast gopro batteries go dead and cards fill up. I have a 32 gb card and could easily use 3 or 4 more. 4 batteries should last all days fishing.
Take a lot of random scenery and animal, birds shots in my opinion that makes the video 100 times better.
The hardest thing i found or have not found is good royalty free music that does not cost a ton of money and enough of it to fit every situation.
Also you can start videotaping right now. if you see a cool eagle flying around or something else you could always use it in one of your videos.
Making a fishing show is fun, of course a lot of work editing. When it is done right it is better than the professionals. One day I would love to make videos like Montana Wild