So I finally saved up and got a 5D Mark IV because everyone said it's a workhorse but honestly I am so frustrated right now because I feel like I can't even use it properly for my first wedding shoot next month. The battery that came with it is basically garbage it dies after like two hours of messing with the settings and I realized the cards I have from my old Rebel are way too slow for 4K video or even fast bursts of photos. I'm literally ready to throw it out the window because I spent all my money on the body and now it feels like a paperweight without the right extras. I need to get this sorted before my trip to Oregon in three weeks.

Heres what I'm looking for:

• Batteries that actually last because the generic one I got is a joke
• Memory cards that wont lag when I'm shooting high res
• A strap that doesn't dig into my neck like the stock one does
• Maybe a bag that fits it with a 24-70mm lens attached

My budget is capped at about 600 bucks for everything right now which is stretching it. Do I really need the vertical grip or is that just extra weight? Im really struggling to figure out what is actually essential versus just marketing fluff...